A thread holds two carts together on a frictionless surface. A spring is compressed
between the two carts. After the thread between the two carts is cut the cart on the
left with a mass of 1.5 kg moves away with a velocity of 27 cm/s. What is the
velocity of the cart on the right that has a mass of 4.5 kg? thisss is the answer I just need to show work>>>>>>>(0.09 m/s)

Answers

Answer 1

Answer:

Velocity on the right side of the cart [tex]=0.09\ ms^{-1}[/tex]

Explanation:

Given

⇒The mass on the left of the cart [tex]m_1=1.5\ kg[/tex]

   Its velocity [tex]v_1=27\ cm/s[/tex],[tex]v_1=\frac{27}{100}=0.27\ m/s[/tex]

⇒Mass on the right of the cart [tex]m_2=4.5\ kg[/tex]

  Velocity[tex]=?[/tex] We have to find [tex]v_2[/tex]

From

The law of conservation of linear momentum:

We can say that.

Initial momentum will equalize the final momentum.

And momentum is the product of mass and its velocity.

Assigning one of its velocity as negative because both are in different direction.

Lets call [tex]v_1=-0.27m/s[/tex]

Recalling the formula and plugging the values.

[tex]m_1(-v_1)+m_2v_2=0[/tex]

[tex]v_2=-\frac{m_1(-v_1)}{m_2} =-\frac{1.5\times -0.27}{4.5} =0.09\ m/s[/tex]

So the velocity of the cart on the right side that has a mass of [tex]4.5\ kg[/tex] is [tex]0.09\ ms^{-1}[/tex]

Answer 2

Using the principle of conservation of momentum, the velocity of the right cart is calculated to be 0.09 m/s.

To determine the velocity of the right cart, we can use the principle of conservation of momentum. According to this principle, the total momentum of a closed system remains constant if no external forces act on it.

Given:

Mass of the left cart ([tex]m_1[/tex]) = 1.5 kgVelocity of the left cart ([tex]v_1[/tex]) = 27 cm/s = 0.27 m/sMass of the right cart ([tex]m_2[/tex]) = 4.5 kgInitial total momentum = 0 (since both carts start from rest)Let [tex]v_2[/tex] be the velocity of the right cart after the thread is cut. By conservation of momentum:

Step-by-Step Calculation:

Write the initial momentum equation:

([tex]m_1[/tex] + [tex]m_2[/tex]) * 0 = [tex]m_1[/tex] * [tex]v_1[/tex] + [tex]m_2[/tex] * [tex]v_2[/tex]

Simplify the equation:

0 = (1.5 kg * 0.27 m/s) + (4.5 kg * [tex]v_2[/tex])

Solve for v2:

4.5 * [tex]v_2[/tex] = - 0.405[tex]v_2[/tex] = -0.09 m/s

The negative sign indicates that the right cart moves in the opposite direction to the left cart. Hence, the velocity of the cart on the right is 0.09 m/s.


Related Questions

During study group Mary and Ben were arguing about a question on the practice test. The question said "True or False: The amount of mass of an object determines the amount of force that is needed to accelerate it." Mary said the answer was false, but Ben thinks it is true. Who is right? Justify your answer.

a.Mary is correct because according to Newton's first law it is unbalanced forces that cause an object to accelerate.

b. Ben is correct. According to Newton's 3rd law force is determined by mass.

c. Ben is correct. According to Newton's 2nd law of motion objects with more mass require more force to accelerate.

d. Mary is correct because it is the type of force that determines the acceleration, not the mass.

Answers

c. Ben is correct. According to Newton's 2nd law of motion objects with more mass require more force to accelerate.

Explanation:

We can answer this question by using Newton's second law of motion, which states that the net force applied on an object is equal to the product between the mass of the object and its acceleration. Mathematically:

[tex]F=ma[/tex]

where

F is the net force

m is the mass of the object

a is its acceleration

From the equation, we notice that:

- The force is directly proportional to the mass of the object --> so if the mass increases, the force needed to accelerate the object will increase too

Therefore, the correct answer is

c. Ben is correct. According to Newton's 2nd law of motion objects with more mass require more force to accelerate.

Learn more about Newton's second law:

brainly.com/question/3820012

#LearnwithBrainly

which letter represent the location of the resister in this diagram?​

Answers

Answer:

Letter which represent the resistance in this circuit diagram isD

Explanation:

Here in this circuit diagram we know that

A = Battery

B = switch

C = connecting Wire

D = Resistance

This zig zag shape is represented as Resistance in all circuits

Answer:

D

Explanation:

How far does a ca4 go

Answers

Answer:

as far as the car can withstand

Explanation:

a 50 kg pole vaulter drops vertically from a height of 4 meters coming to rest just .4s after his feet touch the ground, what is his momentum just before his feet touch the ground? what net force acts on him during his acceleration?

Answers

1) His momentum before touching the ground is 442.5 kg m/s

2) The net force on the pole vaulter is 490 N

Explanation:

1)

The motion of the pole vaulter is a motion of free fall, so it is subjected only to the force of gravity. Therefore, he falls to the ground at constant acceleration ([tex]g=9.8 m/s^2[/tex], acceleration of gravity), so we can use the following suvat equation to find his final velocity:

[tex]v^2-u^2=2as[/tex]

where

v is the final velocity

u = 0 is the initial velocity

[tex]a=g[/tex] is the acceleration

s = 4 m is the distance covered during the fall

Solving for v,

[tex]v=\sqrt{u^2+2as}=\sqrt{0+2(9.8)(4)}=8.85 m/s[/tex]

And therefore, his final momentum before touching the ground is

[tex]p=mv[/tex]

where m = 50 kg is his mass. Substituting,

[tex]p=(50)(8.85)=442.5 kg m/s[/tex]

2)

As we said previously, the only force acting on the pole vaulter during his fall is the force of gravity, which is

[tex]F=mg[/tex]

where

m = 50 kg is the mass

[tex]g=9.8 m/s^2[/tex] is the acceleration of gravity

Substituting, we find the force of gravity, and therefore the net force acting on the pole vaulter:

[tex]F=(50)(9.8)=490 N[/tex]

Learn more about free fall motion:

brainly.com/question/1748290

brainly.com/question/11042118

brainly.com/question/2455974

brainly.com/question/2607086

#LearnwithBrainly

the potential energy of an object decreases by 10J what is the change of the object's kenitic energy, assuming there is no friction in the system?​

Answers

Final answer:

If the potential energy of an object decreases by 10J in a frictionless system, the kinetic energy increases by the same amount, 10J, due to the Law of Conservation of Energy.

Explanation:

When the potential energy of an object decreases by 10J in a system with no friction, according to the Law of Conservation of Energy, there must be an equivalent increase in the object's kinetic energy. This is because the total mechanical energy (potential energy plus kinetic energy) of the system remains constant if no external work is done and no energy is lost to friction. Therefore, if the potential energy decreases by 10J, the kinetic energy will increase by 10J, assuming there is no energy lost to other forms like thermal energy or sound.

Final answer:

When potential energy decreases by 10J, the kinetic energy of the system increases by the same amount, following the Law of Conservation of Energy.

Explanation:

The potential energy of an object decreases by 10J, leading to a corresponding increase in kinetic energy by 10J. This change follows the Law of Conservation of Energy, where the loss of potential energy is accompanied by a gain in kinetic energy.

When there is no friction in the system, the energy transformation is purely between potential and kinetic energy, resulting in the described change. When potential energy decreases by 10J, the kinetic energy of the system increases by the same amount, following the Law of Conservation of Energy.

Which factors affect heat transfer between a warm and a cool substance?
the time it took to hear the substance, the area of contact and the specific heats of the substances
the amount of time of contact, the area of contact, and the specific heals of the substances
the time it took to heat the substance, the area of the substances, and the specific heats of the substances
the amount of time of contact, the area of the substances, and the specific heats of the substances​

Answers

The heat transfer depends on the factors such as the amount of time of contact, the area of contact, and the specific heals of the substances.

What is Heat Transfer?

The process of flow of energy from a body of higher temperature to a lower temperature is known as heat transfer.

The mathematical expressions governing the concept of heat transfer are given as follows-

Q = m × c × ΔT

here,

m is the mass of the body.

c is the specific heat.

ΔT is the change in temperature.

And,

Q = k × A×ΔT / L

here,

k is the thermal conductivity.

A is the area of contact and L is the length of the body.

So, clearly, heat transfer depends on the factors such as specific heat and the area of contact. Moreover, the time of contact is also a matter of discussion as the longer the contact time, the more amount of energy will get a transfer from one body to another.

Thus, we can conclude that the heat transfer depends on the factors such as the amount of time of contact, the area of contact, and the specific heals of the substances.

Learn more about the heat transfer here:

https://brainly.com/question/12107378

3. A -4.00-uC charge lies 20.0cm to the right of a 2.00-uC charge on the x axis. What is the force on the 2.00-uC charge?

Answers

Answer:

The force on the 2.00-uC charge is [tex]36 \times 10^{10} \mathrm{N}[/tex]

Explanation:

We know that force between two charges is given by Coulomb’s law,

[tex]\mathrm{F}=\mathrm{k} \frac{q 1 q 2}{r * r}[/tex]

Where k = Coulomb’s constant =

[tex]9.0 \times 10^{9} \mathrm{Nm}^{2} \mathrm{C}^{-2}[/tex]

And q1 and q2 are the charges given to be = -4.00-uC and 2.00-uC charges

And r = distance between the charges = 20 cm = 0.2 m  

Substituting the given values in the formula we get force applied on [tex]2.00\ \mu C[/tex] charge,

F =  [tex]36 \times 10^{10} \mathrm{N}[/tex] attractive force which is the required answer.

The force on the 2.00-uC charge is 1.8N towards the right.

Let us assume Q = -4.00μC and charge q = 2.00μC. Distance between them is r = 0cm = 0.2m

Coulomb's Law:

According to Coulomb's law, the electrostatic force between two charges Q and q separated by a distance r is given by:

[tex]F=k\frac{Qq}{r^2}[/tex]

where k is Coulomb's constant

[tex]F=\frac{9\times10^9\times4\times10^{-6}\times2\times10^{-6}}{0.20\times0.20} N\\\\F=1.8N[/tex]

Since we are calculating the force on the q which is positive, due to Q which is negative. The direction of the force will be towards the right since the electric field for the negative charge will be directed towards the charge, which is towards the right.

So the net force is 1.8N towards right.

Learn more about Coulomb's Law;

https://brainly.com/question/506926?referrer=searchResults

If Mary is 3m from her reflection, how far is mary from the mirror?

Answers

Final answer:

Mary is 1.5m from the mirror, as the distance to her reflection, which is 3m, includes the distance to the mirror and the equal distance from the mirror to the reflection.

Explanation:

If Mary is 3m from her reflection in a mirror, it implies that she is 1.5m from the mirror itself. This is because the law of reflection states that the distance from the object to the mirror is equal to the distance from the mirror to the image of that object. Therefore, in this case, the 3m distance is double the actual distance between Mary and the mirror since it includes the path to the mirror and the equal path from the mirror to the image.

The angle between the two force of magnitude 20N and 15N is 60 degrees (20N force being horizontal) determine the resultant in magnitude and direction
A. If the force are pull
B. The 15N force is a push and 20N force is a pull

Answers

A) The resultant force is 30.4 N at [tex]25.3^{\circ}[/tex]

B) The resultant force is 18.7 N at [tex]43.9^{\circ}[/tex]

Explanation:

A)

In order to find the resultant of the two forces, we must resolve each force along the x- and y- direction, and then add the components along each direction to find the components of the resultant.

The two forces are:

[tex]F_1 = 20 N[/tex] at [tex]0^{\circ}[/tex] above x-axis

[tex]F_2 = 15 N[/tex] at [tex]60^{\circ}[/tex] above y-axis

Resolving each force:

[tex]F_{1x}=F_1 cos \theta = (20)(cos 0)=20 N\\F_{1y}=F_1 sin \theta =(20)(sin 0)=0 N[/tex]

[tex]F_{2x}=F_2 cos \theta = (15)(cos 60)=7.5 N\\F_{2y}=F_2 sin \theta =(15)(sin 60)=13.0 N[/tex]

So, the components of the resultant are:

[tex]F_x = F_{1x}+F_{2x}=20+7.5 = 27.5 N\\F_y = F_{1y}+F_{2y}=0+13.0=13.0 N[/tex]

And the magnitude of the resultant is:

[tex]F=\sqrt{F_x^2+F_y^2}=\sqrt{27.5^2+13.0^2}=30.4 N[/tex]

And the direction is:

[tex]\theta=tan^{-1}(\frac{F_y}{F_x})=tan^{-1}(\frac{13.0}{27.5})=25.3^{\circ}[/tex]

B)

In this case, the 15 N is applied in the opposite direction to the 20 N force. Therefore we need to re-calculate its components, keeping in mind that the angle of the 15 N force this time is

[tex]\theta=180^{\circ}-60^{\circ}=120^{\circ}[/tex]

So we have:

[tex]F_{2x}=F_2 cos \theta = (15)(cos 120)=-7.5 N\\F_{2y}=F_2 sin \theta =(15)(sin 120)=13.0 N[/tex]

So, the components of the resultant this time are:

[tex]F_x = F_{1x}+F_{2x}=20-7.5 = 12.5 N\\F_y = F_{1y}+F_{2y}=0+13.0=13.0 N[/tex]

And the magnitude is:

[tex]F=\sqrt{F_x^2+F_y^2}=\sqrt{13.5^2+13.0^2}=18.7 N[/tex]

And the direction is:

[tex]\theta=tan^{-1}(\frac{F_y}{F_x})=tan^{-1}(\frac{13.0}{13.5})=43.9^{\circ}[/tex]

Learn more about vector addition:

brainly.com/question/4945130

brainly.com/question/5892298

#LearnwithBrainly

The autumnal _______ occurs in September when the days start getting shorter and the nights are longer in the Northern Hemisphere. During a new moon phase, spring tides produce the _______ difference between high and low tides. Tides are caused by _______ pulling the water of the oceans and causing it to bulge toward the large masses of the moon and sun. During a lunar eclipse, the moon briefly passes through the _______, where it receives much less sunlight causing the moon to appear dim. When the moon passes between the sun and the earth a/an _______ eclipse occurs which momentarily blocks the sun's rays from reaching certain areas of the earth.

Answers

1. Equinox

2. Greatest

3. Gravity

4. Penumbra

5. Solar

6. Earth's atmosphere refracts sunlight toward the moon when the moon passes through the umbria. The atmosphere scatters blue light from the sun, but red light is refracted and bent toward the moon.

Answer:

1. Equinox

2. Greatest

3. Gravity

4. Penumbra

5. Solar

6. Earth's atmosphere refracts sunlight toward the moon when the moon passes through the umbria. The atmosphere scatters blue light from the sun, but red light is refracted and bent toward the moon.

The business practice of hiring workers in another country is known as globalization. insourcing. subcontracting. outsourcing.

Answers

The business practice of hiring workers in another country is known as outsourcing.

What is outsourcing?

Outsourcing is a business practice of hiring worker from outside country. This practice is done with the aim getting cheap labour force, or getting efficient labour force.

This business practice (outsourcing) can also be seen as transferring of employees and assets from one firm to another.

Thus, the business practice of hiring workers in another country is known as outsourcing.

Learn more about outsourcing here: https://brainly.com/question/4456416

The business practice of hiring workers in another country is known as outsourcing. Hence, option D is correct.

What is outsourcing?

Outsourcing is the business practice of hiring a party to perform services and goods. It results in the globalization of markets and it drives maximum profits.

It is also defined as a company hiring a third party or a company to perform their task and to provide service for the company. Examples of outsourcing are advertising, website development, etc.

Outsourcing can help to reduce labor costs and enable them to work for less money. It helps the company to focus on the core aspects of the business. The outsourcing process leads to running a successful business model.

Outsourcing has the biggest advantage in time and money savings. Adapting outsourcing helps in gaining profit, increasing efficiency, and can control costs.

Hence, the business practice of hiring workers in another country is known as outsourcing. Thus, the correct option is D.

To know more about outsourcing:

https://brainly.com/question/28915776

#SPJ5

Which statement best describes how reproduction leads to natural selection in a population?
Organisms do not produce many offspring, so all of them can survive and pass on their traits.
Organisms overproduce offspring; consequently, all of them are likely to survive and pass on traits.
Organisms overproduce offspring, so only some survive and pass on their traits.
Organisms do not overproduce offspring; therefore, those that are produced will develop the best traits.

Answers

Organisms overproduce offspring, so only some survive and pass on their traits.

Natural selection is the fitting of a population to its environment.

Explanation:

Most organisms produce more than two or more offspring in their lifetime. Therefore the subsequent generations ideally have more individuals than the previous. However, naturally, the population size does not grow indefinitely. This is because some individuals do not survive to pass their genes to the next generation. Natural selection chooses the best fit individuals to habitat, and these live long enough to pass their traits to the next generation. Natural selection powers the evolution of a population even as environment changes  

Learn More:

For more on natural selection check out;

https://brainly.com/question/12495043

https://brainly.com/question/1184863

#LearnWithBrainly

Answer:

The answer is C) Organisms overproduce offspring, so only some survive and pass on their traits

If you need any help on this question please ask me! :)

when a man travel from hilly region to terai region what will happen to his weight ? explain with reason.​

Answers

Answer:

His weight increases.

Explanation:

The weight of the body is the gravitational force acting on the body at that location.The gravitational force is defined as the product of mass  of the body and the acceleration due to gravity.

                                           W = m x g

The acceleration due to gravity of earth is high at the surface and decreases with respect to the height from the surface.Hence, a man in the higher altitude regions experience lower weight that in the the lower altitude  regions.

A 5kg mass at rest on the ground is rised up to 15m. Find the work that was done on the object.

A. E before=___ Work=___ E after=___
B. Conservation of Energy equation:
C. Solve.

Answers

A. Before work is the answer

Answer:

E before = 0 J Work = 735.75 J E after= 735.75 J

Explanation:

The work that was done on the object is calculated as follows:

W = m*g*h

where m refers to the mass of the object, g to gravitational acceleration (9.81 m/(s^2)) and h to the hight that the object was raised up. Replacing with data into the equation (units are ommited):

W = 5*9.81*15

W = 735.75 J

Taking the ground as heigth = 0 m, then both potential and kinetic energy of the object before the lift was zero (notice that it was resting). Conservation energy equation states that the change of energy of an object is equal to the work applied on the object (like this case) or done by the object. That is:

ΔE = W

where ΔE = Energy after - Energy before

Therefore:

Energy after = W = 735.75 J

The potential energy after the lift is also calculated as m*g*h, so the energy after the lift is all potential energy gained by the object due to the work applied on it.

which of the following materials has the lowest resistance copper wood plastic​

Answers

Final answer:

Copper has the lowest resistance among the given materials.

Explanation:

Copper has the lowest resistance among the given materials: copper, wood, and plastic.

In a series circuit, the total resistance is the sum of individual resistances. The circuit element with the lowest resistance would contribute the least to the overall resistance.

In a parallel circuit, the total resistance is less than the smallest individual resistance due to the combined effect of multiple paths for current flow.

It's important to note that resistance in most materials increases with temperature. So, achieving the lowest possible resistance often involves using superconducting materials at extremely low temperatures or selecting materials with inherently low resistance characteristics for specific applications.

A 55 kg person is sitting in a car that hits a concrete floor.The car was moving at 30 m/s and came to a halt in 0.35s.What is the average force that the seatbelt exerts on the person.

Answers

Answer:

-4714.28N

Explanation:

Given

Mass of person, m= 55 kgCar speed initially ,u =30[tex]\frac{m}{sec}[/tex]Car speed finally, v=0(car comes to a halt)Duration for the car to come halt,t=0.35 sec

This question is based on the concept of Impulse

Impulse is the force acting in a time interval(usually very short)

it is equal to force multiplied with time and also equal to change in momentum of body

⇒[tex]F\times t= mv-mu\\F \times0.35= 55\times (0-30)\\F\times 0.35= -1650\\F= -4714.28 N[/tex]

Therefore the seat belt exerts a force of -4718.28N on the person

The negative sign signifies that seat belt exerts force in opposite direction of Force

The average force exerted by the seatbelt on a 55 kg person in a car that decelerates from 30 m/s to a halt in 0.35s is 4714.05 N, acting in the direction opposite to the motion.

To calculate the average force that the seatbelt exerts on a person, we can use the formula derived from Newton's Second Law of Motion:

F = ma

However, since acceleration is not directly given, we can find it using the formula for acceleration (a) in terms of velocity change (∆v) and time (∆t):

a = ∆v / ∆t

In this case:

The velocity change (∆v) is 30 m/s (since the car stops, the final velocity is 0 and initial velocity is 30 m/s).The time (∆t) over which the velocity change occurs is 0.35s.

Now, we will calculate the acceleration experienced by the person:

a = -30 m/s / 0.35s = -85.71 m/s² (The negative sign indicates deceleration).

Using the calculated acceleration and the person's mass (55 kg), we can find the force:

F = 55 kg imes -85.71 m/s² = -4714.05 N

The negative sign indicates the direction of the force is opposite to the direction of motion. The average force exerted by the seatbelt on the person is therefore 4714.05 N.

Place the items in order from the largest wavelength to the shortest wavelength.


Blue visible, Gamma radiation ,Green visible,Infrared, Microwave ,Orange visible ,Radio wave, Red visible, Ultraviolet (UV), Violet visible, X-ray ,Yellow visible

Brainliest???????? will i mark you???

Answers

From largest to shortest wavelength:

Radio waves, Microwaves, Infrared radiation, Red visible, Orange visible, Yellow visible, Green visible, Blue visible, Violet visible, Ultraviolet, X-rays, Gamma rays

Explanation:

Electromagnetic waves are oscillations of the electric and the magnetic field in a plane perpendicular to the direction of motion the wave.

Electromagnetic waves are the only type of waves able to travel in a vacuum, and in a vacuum they always at the same speed, the speed of light,  equal to:

[tex]c=3.0\cdot 10^8 m/s[/tex]

Electromagnetic waves are classified into 7 different types, according to their wavelength/frequency. From slongest to shortest wavelength, they are ranked as follows:

Radio waves

Microwaves

Infrared radiation

Visible light

Ultraviolet

X-rays

Gamma rays

Visible light is the only part of the spectrum that the human eye is able to see. Depending on the wavelength of the visible light, we perceive the radiation as a different color. In order from longest to shortest wavelength, colors are:

Red

Orange

Yellow

Green

Blue

Indigo

Violet

Therefore, the correct order from largest to shortest wavelength in the given list is:

Radio waves

Microwaves

Infrared radiation

Red visible

Orange visible

Yellow visible

Green visible

Blue visible

Violet visible

Ultraviolet

X-rays

Gamma rays

Learn more about electromagnetic waves:

brainly.com/question/9184100

brainly.com/question/12450147

#LearnwithBrainly

Answer:

From largest to shortest wavelength:

Radio waves, Microwaves, Infrared radiation, Red visible, Orange visible, Yellow visible, Green visible, Blue visible, Violet visible, Ultraviolet, X-rays, Gamma rays

Explanation:

Electromagnetic waves are oscillations of the electric and the magnetic field in a plane perpendicular to the direction of motion the wave.

Electromagnetic waves are the only type of waves able to travel in a vacuum, and in a vacuum they always at the same speed, the speed of light,  equal to:

Electromagnetic waves are classified into 7 different types, according to their wavelength/frequency. From slongest to shortest wavelength, they are ranked as follows:

Radio waves

Microwaves

Infrared radiation

Visible light

Ultraviolet

X-rays

Gamma rays

Visible light is the only part of the spectrum that the human eye is able to see. Depending on the wavelength of the visible light, we perceive the radiation as a different color. In order from longest to shortest wavelength, colors are:

Red

Orange

Yellow

Green

Blue

Indigo

Violet

Therefore, the correct order from largest to shortest wavelength in the given list is:

Radio waves

Microwaves

Infrared radiation

Red visible

Orange visible

Yellow visible

Green visible

Blue visible

Violet visible

Ultraviolet

X-rays

Gamma rays

Explanation:

An analogy makes a comparison between objects based on their similar qualities. Cassidy wanted to create an analogy for the motion of atoms in solids, liquids, and gases, so she compared them to marbles in a tray. Which best compares the phases of matter to marbles in a tray?A) A solid is like the tray being shaken and the marbles moving around it, and a liquid is like the tray being shaken slowly and all the marbles moving in their positions.B) A solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it.C) A gas is like the tray being shaken slowly and all the marbles moving in their positions, and a solid is like the tray being shaken hard and the marbles moving vigorously around it.D) A liquid is like the tray being shaken hard and the marbles moving vigorously around it, and a gas is like the tray being shaken slowly and all the marbles moving in their positions.

Answers

Answer:

A solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it

Explanation:

its b

A solid is like the tray shaken slowly and all the marbles will move in their positions. A liquid is like the tray being shaken and the marbles will move around it. A gas is like the tray being shaken hard and the marbles will move vigorously around it. Therefore, option (B) is correct.

What are states of matter?

The matter exists in various forms in nature. Some substances have a definite shape such as wood, stone, marbles and some can flow, take the any shape such as water, while there are forms of matter that do not have definite shapes.

In solids, the molecules are very tightly packed and thus solids have a definite and rigid structure. The compact packing of solids indicates that the molecules are too close to each other and the molecules do not show any movement. The kinetic energy of molecules or atoms in the solid is the least or negligible.

In liquids, the molecules are at some distance from each other and they show some movements. Since the molecules show significant movement, so they have significant amount of kinetic energy. The kinetic energy of molecules or atoms in the liquid is more than that of solids.

In gases, the molecules or atoms are farther from each other and thus their molecules show huge movement. The kinetic energy of molecules or atoms in gases is the greatest in comparison to solids and liquids.

Learn more about states of matter, here:

brainly.com/question/13233345

#SPJ2

Jessica stretches her arms out 0.8 m from the center of her body while holding a 2.0 kg mass in each hand. She then spins around on an ice rink at 1.2 m/s.
a. What is the combined angular momentum of the masses?
b. If she pulls her arms in to 0.12 m, what is her new linear speed?

Answers

Answer:

a) L = 3.84 kg m² / s, b)   v = 0.96 m / s

Explanation:

a) the angular momentum is

    L = I w

Linear and angular magnitudes are related

     v = w r

     w = v / r

The moment of inertia of a point mass is

      I = m r²

We replace

     L = 2 m r² v / r

The two is because they are two masses

     L = 2 m r v

     L = 2 2.0 0.8 1.2

     L = 3.84 kg m² / s

b) The girl reduces the distance to 0.12 m

In this case the system is isolated, so the angular momentum is preserved

Initial moment,

       L₀ = 3.84 kg m² / s

Final after shrugging arms

       [tex]L_{f}[/tex] = I  [tex]w_{f}[/tex]

       L₀ =  [tex]L_{f}[/tex]

      3.84 = 2 2.0 0.12 wf

       [tex]w_{f}[/tex]  = 3.84 / 0.48

       [tex]w_{f}[/tex]  = 8 rad / s

Linear velocity is

       v = w r

      v = 8 0.12

      v = 0.96 m / s

Final answer:

The combined angular momentum of the masses that Jessica is holding is 3.84 kg·m^2/s. After she pulls her arms in, her new linear speed is 3.84 m/s, calculated by the conservation of angular momentum, which states that L_initial = L_final.

Explanation:

Calculating Angular Momentum and Linear Speed

To calculate the combined angular momentum of the masses that Jessica holds in her hands while spinning on the ice rink, we use the formula L = mvr, where L is the angular momentum, m is the mass, v is the linear velocity, and r is the radius or the distance from the center of her body to the mass.

Given:

m (mass) = 2.0 kg for each hand (two masses),
v (linear velocity) = 1.2 m/s,
r (radius) = 0.8 m.

The angular momentum for one mass is L = 2.0 kg × 1.2 m/s × 0.8 m. For both masses, we simply double this value:

L  = 2(mvr) = 2(2.0 kg × 1.2 m/s × 0.8 m) = 3.84 kg · m^2/s.

For part b, as Jessica pulls her arms in, her moment of inertia decreases and, according to the conservation of angular momentum, her linear speed must increase since angular momentum is conserved in the absence of external torques. The new radius r is now 0.12 m.

Let the new linear speed be v'. Using the conservation of angular momentum:

L_initial = L_finalmv_initialr_initial = mv'_finalr_finalv' = (mv_initialr_initial) / (mr_final)v' = (2.0 kg × 1.2 m/s × 0.8 m) / (2.0 kg × 0.12 m)v' = 3.84 m/s. So, the new linear speed is 3.84 m/s.

Learn more about Angular Momentum here:

https://brainly.com/question/37906446

#SPJ3

What scientific question does Isaac Asimov most clearly address with his
story "Runaround"?

A. Should robots be allowed to marry?

B, should robots be treated as members of the family?

C. Can robots be trained to follow a moral code?

D.
Can robots be trained to be the sole caretakers of children?

Answers

Answer:  C. can robots be trained to follow a moral code?

Explanation:

Answer:

Its C

Explanation:

A force of 350N is applied to a body. If the work done is 40kJ, what is the distance through which the body moved?

Answers

The distance covered by the body is 114.3 m

Explanation:

The work done by a force exerted on an object is given by

[tex]W=Fd cos \theta[/tex]

where

F is the magnitude of the force

d is the displacement of the object

[tex]\theta[/tex] is the angle between the direction of the force and of the displacement

For the object in this problem, we have

F = 350 N is the force applied

[tex]W=40 kJ = 40,000 J[/tex] is the work done

[tex]\theta=0^{\circ}[/tex] if we assume that the force is applied parallel to the motion of the object

Solving for d, we find the distance covered by the object:

[tex]d=\frac{W}{F cos \theta}=\frac{40,000}{(350)(cos 0)}=114.3 m[/tex]

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

What is the definition of a neutron?

Answers

Answer:

neutron is a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

Answer:

According to Oxford dictionary neutron is a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

Adding a ___ to an electric circuit would increase the magnetic field around a wire

Answers

Answer: solenoid

Explanation: solenoid: increase strength around electromagnetic fields

Someone throws their laptop with a horizontal component of velocity of 25 m/s. It takes the laptop 3.00 seconds to come back to the original height. Calculate the horizontal range and the initial vertical component of velocity

Answers

1) The horizontal range of the laptop is 75.0 m

2) The initial vertical component of the velocity is 14.7 m/s

Explanation:

1)

The motion of the laptopin this problem is a projectile motion, so it follows a parabolic path which consists of two independent motions:  

- A uniform motion (constant velocity) along the horizontal direction  

- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction  

To find the horizontal range of the laptop, we just need to analyze its horizontal motion.

We know that:

- The laptop moves horizontally with a constant velocity of [tex]v_x = 25 m/s[/tex]

- The time of flight of the laptop is [tex]t=3.00 s[/tex]

So, the horizontal range of the laptop is given by

[tex]d=v_x t = (25)(3.00)=75.0 m[/tex]

2)

The total time of flight of a projectile is given by

[tex]t=\frac{2u_y}{g}[/tex]

where

[tex]u_y[/tex] is the initial vertical component of hte velocity

[tex]g=9.8 m/s^2[/tex] is the acceleration of gravity

Here we know that the time of flight is

[tex]t=3.00 s[/tex]

Therefore, we can solve the formula for [tex]u_y[/tex], to find the initial vertical velocity:

[tex]u_y = \frac{tg}{2}=\frac{(3.00)(9.8)}{2}=14.7 m/s[/tex]

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

help asap!!! Describe the distinction between speed and velocity. Be sure to include
examples of each.

Answers

The distinctions between speed and the velocity is as follows:

Speed:

“Speed” is a “scalar quantity”. “Speed” of the “vehicle” says that “rate of the distance traveled” by “the vehicle”. For example, consider that a car is moving with “the speed 5 Km/h”. It informs that the “car can move 5 Km in one hour”.

Velocity:

“Velocity” is a “vector quantity”. “Velocity” of the “vehicle” says that “rate of the distance traveled” and “the direction of the vehicle”. For example, consider a car is moving with “5 km/h west”. It informs that car is traveling in “direction of west” it covers “5 Km in one hour”.

A person absentmindedly walks off the edge of a tall cliff. They will fall 50 m into either
deadly rocks or a safe lake below the cliff. The lake is 12 meters away from the edge of
the cliff
If the person walks off the cliff at a constant velocity of 3.8 m/s,
will they survive? No (yes or no) How far did they go?

Answers

The man lands 12.1 m far from the base of the cliff, so he will survive

Explanation:

The motion of the person is a projectile motion, which consists of two independent motions:  

- A uniform motion (constant velocity) along the horizontal direction  

- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction  

We start by considering the vertical motion, to find the time of flight of the person, with the following suvat equation:

[tex]s=ut+\frac{1}{2}gt^2[/tex]

where :

s = 50 m is the vertical displacement of the man (the height of the cliff)

t is the time of flight

u = 0 is the initial vertical velocity

[tex]g=9.8 m/s^2[/tex] is the acceleration of gravity

Solving for t,  we find

[tex]t=\sqrt{\frac{2s}{g}}=\sqrt{\frac{2(50)}{9.8}}=3.19 s[/tex]

Now we know that the man moves horizontally, with a constant velocity of

[tex]v_x = 3.8 m/s[/tex]

Therefore, the horizontal distance covered by the man during this time is

[tex]d=v_x t = (3.8)(3.19)=12.1 m[/tex]

So the man lands 12.1 m far from the base of the cliff: therefore, on the lake, so he will survive.

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

one feels diffulcites tobreath in a deep well while cleaning it, why?

Answers

Answer:

one feels diffulcites to breath in a deep well while cleaning it because well has less amount of oxygen in it.

A fired paper piece can be thrown to check the amount of oxygen.

Answer:

Because usually oxygen is on the ground, and then if you dig a hole, all kinds of gases scramble to run in, then oxygen is naturally less, which is also because of the depth of the ground. The deeper the ground, the more gas will press on you. Simply put, the deeper the well, the greater the pressure. Most of the carbon dioxide you emit in that well is held down by other gases and cannot go out, so that there is less oxygen.

Dane is holding an 8 kilogram box 2 metres above the ground. How much energy is in the box's gravitational potential energy store? Assume Dane is on Earth, where g = 10 N/kg.

Answers

Answer:160j

Explanation:

PE=mgh

m=8kg

g=10N/kg

h=2m

PE=8*10*2

PE=160j

an unbalanced force of 2 N ask on a 3 kg object for six seconds the magnitude of the objects change in velocity is
yes 1)18m/s 2)2m/s 3)36m/s 4)4.0m/s

Answers

The change in velocity is 4) 4.0 m/s

Explanation:

First of all, we can find the acceleration of the object, by applying Newton's second law:

[tex]F=ma[/tex]

where

F = 2 N is the net force on the object

m = 3 kg is the mass of the object

a is the acceleration

Solving for a,

[tex]a=\frac{F}{m}=\frac{2}{3}=0.67 m/s^2[/tex]

The motion of the object is a uniformly accelerated motion, so we can use the suvat equation:

[tex]v=u+at[/tex]

where

u is the initial velocity

v is the final velocity

[tex]a=0.67 m/s^2[/tex] is the acceleration

t = 6 s is the time elapsed

Therefore, the change in velocity is

[tex]v-u = at=(0.67)(6)=4.0 m/s[/tex]

Learn more about Newton's second law and acceleration:

brainly.com/question/11411375

brainly.com/question/1971321

brainly.com/question/2286502

brainly.com/question/2562700

#LearnwithBrainly

What acceleration will you give to a 24.3 kg box if you push it horizontally with a force of 85.5 N? Please show work.

Answers

you would have a force of 3.52 m/s^2
Final answer:

The acceleration of a 24.3 kg box being pushed with a force of 85.5 N is approximately 3.52 m/s². This is determined through the application of Newton's Second Law (F=ma) where acceleration (a) is obtained when the applied force (F) is divided by the mass (m).

Explanation:

The subject of the question is Physics, specifically the concept of Newton's Second Law. This law states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. It is represented by the formula F = ma, where F is the force, m is the mass, and a is the acceleration.

In this case, we have the force F = 85.5 N and the mass m = 24.3 kg. You're asked to find out the acceleration, denoted by 'a'. You can find the acceleration by rearranging the formula to a = F/m. Substituting the given values into the formula gives a = 85.5 N / 24.3kg, resulting in an acceleration of approximately 3.52 m/s².

Learn more about Acceleration here:

https://brainly.com/question/11789833

#SPJ3

Other Questions
A molecule moves down its concentration gradient using a transport protein in the plasma membrane. This is an example of You are confronted with a box of preserved grasshoppers of various species that are new to science and havenot been described. Your assignment is to separate them into species. There is no accompanying information asto where or when they were collected. Which species concept will you have to use?A) biologicalB) phylogeneticC) ecologicalD) morphological The terms "forensic science" and "criminalistics" are often used together. Forensic science is that part of science applied to answering legal questions, whereas criminalistics deals with the study of physical evidence related to a crime.A) TrueB) False 9. Find the distance between the point P(-12,-2)and Q(3,6).Hint: a sketch is useful. Review the image and two-column proof below. Which of the following represents a valid reason for statement #2? opposite angles of a parallelogram are equal opposite sides of a parallelogram are equal all three faces are congruent both bases of the prism are congruent . Between 1526 and 1870 nearly 10 million slaves were shipped from Africa, which country/colony/region received the most slaves? Lo primero que ustedes (1) (deber) hacer es empezar poco a poco. ROSA Cuntos das a la semana (2) (aconsejarnos) t? What is the value of the expression below? (6) x (6) x (6) x (6) The percent of working students increased by 14.1% to 31.7%, what was the percent prior to the increase? (Express your answer rounded correctly to the nearest tenth of a percent!) 50 POINTS IF YOU ANSWER THIS QUESITON CORRECTLY. AND YOU CAN GET BRAINLIST IF YOU ANSWER QUESTION WITH EXPLANATION. :] 3.You purchase a car using a $25,000 loan with a 5% simple interest rate. (a)Suppose you pay the loan off after 4 years. How much interest do you pay on your loan? Show your work. (b)Suppose you pay the loan off after 2 years. How much interest do you save by paying the loan off sooner? Show your work. A pregnant mother recently had an ultrasound that indicated massive defects in the formation of her unborn babys heart. Other oddities were noted in the spinal cord region, the kidneys, and the formation of the facial features. She had an amniocentesis to examine the babys karyology, and it was noted that there was a deletion of a small piece of one chromosome. The doctors advised her that she would likely miscarry. The devastated parents consult you as a genetic advisor on the likelihood that a future pregnancy would end similarly. What advice do you give this unfortunate couple? // This program is supposed to display every fifth year // starting with 2017; that is, 2017, 2022, 2027, 2032, // and so on, for 30 years. start Declarations num year num START_YEAR = 2017 num FACTOR = 5 num END_YEAR = 30 year = START_YEAR while year The Cats and Dogs League was organized as a nongovernmental not-for-profit organization. The League received a pledge of $10,000 to be used to build an addition to the kennel. This donation will not be received for three years. How should this pledge be recorded? Unlike Piaget, _____ believed that cognitive development was largely the result of the child's interaction with members of his or her own culture rather than his or her interaction with objects. a) Lev Vygotsky b) Mary Ainsworth c) William James d) Anna Freud On January 1, Eagle, Inc., issued $800,000 of ten percent, 20-year bonds for $958,342, yielding an effective interest rate of eight percent. Semiannual interest is payable on June 30 and December 31 each year. The firm uses the effective interest method to amortize the premium. RequiredPrepare an amortization schedule showing the necessary information for the first two interest periods. Round amounts to the nearest dollar. estComplete the solution of the equation. Find thevalue of y when x equals 0.-7x + 3y = 30Enter the correct answer 8. If 6x2 = 54, then x = ?(1) 29.0 (2) 3.0 (3) 14.5 How does recycling runoff reduce agricultural pollution? the world future society Predicts that by the year 2020, airplanes will be able to carry 1400 passengers. Today's biggest jets can carry 600 passengers. What will be the percent of increase of airplane passengers? Mr. Sir followed Stanley back to his hole to see how he was doing. "You better get with it," he said. "Or else you're going to be digging in the hottest part of the day." He popped some sunflower seeds into his mouth, deftly removed the shells with his teeth, and spat them into Stanley's hole.Every day Elya carried the little piglet up the mountain and sang to it as it drank from the stream. As the pig grew fatter, Elya grew stronger.Holes,Louis SacharWhy does the author move from Stanleys plotline to Elyas at this point in the story?A) to show that both worked hardB) to show that both had problemsC) to show how tired both were