You want to make a ride so you do not want to exceed 1.1g’s, if the radius of the turns are 10m, then what is the maximum speed the ride can go at?

1) Distance: 14 km

2) Speed: 3.5 km/h

3) Displacement: 7.6 km at [tex]23.2^{\circ}[/tex] north of west

4) Velocity: 1.9 km/h at [tex]23.2^{\circ}[/tex] north of west

Explanation:

1)

Distance is a scalar quantity, and it corresponds to the total length of the path covered by an object during its motion, regardless of its direction.

Here we have the following motion:

[tex]d_{y1}=5 km[/tex] North

[tex]d_x = 7 km[/tex] west

[tex]d_{y2}=2 km[/tex] south

So, the distance covered is:

[tex]d=d_x + d_y = 5 + 7 +2 = 14 km[/tex]

And since it is a scalar, distance has no direction.

2)

Speed is a scalar quantity telling "how fast" an object is moving. It is calculated as:

[tex]speed=\frac{d}{t}[/tex]

where:

d is the distance

t is the time taken

In this problem, we have

d = 14 km (distance)

t = 4 h (time taken)

Substituting,

[tex]speed=\frac{14 km}{4 h}=3.5 km/h[/tex]

And since it is a scalar, it has no direction.

3)

Displacement is a vector quantity connecting the initial position to the final position of motion. The magnitude is the short distance in a straight line between the initial and final position of motion.

Here we have the following motions:

[tex]d_{y1}=5 km[/tex] North

[tex]d_x = 7 km[/tex] west

[tex]d_{y2}=2 km[/tex] south

So the net displacement in the north-south direction is

[tex]d_y = 5 - 2 = 3 km[/tex] North

[tex]d_x, d_y[/tex] are at right angle, so they form the sides of a right triangle, of which the hypothenuse corresponds to the displacement. Therefore, we can find the magnitude of the displacement by using Pythagorean's theorem:

[tex]d=\sqrt{d_x^2+d_y^2}=\sqrt{7^2+3^2}=7.6 km[/tex]

And the direction is given by

[tex]\theta=tan^{-1}(\frac{d_y}{d_x})=tan^{-1}(\frac{3}{7})=23.2^{\circ}[/tex] north of west.

4)

Velocity is a vector quantity, given by:

[tex]velocity=\frac{d}{t}[/tex]

where

d is the displacement

t is the time taken

In this problem, we have

d = 7.6 km (displacement)

t = 4 h (time taken)

So, the velocity is

[tex]velocity=\frac{7.6 km}{4h}=1.9 km/h[/tex]

And being a vector, velocity has also a direction, which is the same of the displacement: so, [tex]23.2^{\circ}[/tex] north of west.

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Answer:

Once you reach adulthood, you will not experience peer pressure.

Explanation:

We tend to believe that self-control comes from within, but many of our attitudes depend as much on friends and family as on ourselves. That's because at any stage of our life (even the adult stage) our friends and our family have the power to influence us, sometimes that influence is good and sometimes bad, it's up to us to reason about them.

The people around us have the power to make us fat, consume more alcohol, worry less about the environment and expose ourselves to the sun without proper protection, among many other things.

It is not simply about peer pressure, where you deliberately act in a certain way to suit the group. It is, in fact, largely an unconscious attitude. Without your awareness, your brain is constantly picking up cues from people around you to dictate your behavior. And the consequences can be serious.

Answer:

its B :)

Explanation:

The time taken is approximately 26 minutes

Explanation:

The motion of the body in this problem is a uniform motion (= at constant velocity), therefore we can use the following equation:

[tex]v=\frac{d}{t}[/tex]

where

v is the speed

d is the distance covered

t is the time taken

In this problem, we have

v = 75 km/h is the speed

d = 32 km is the distance to be covered

Solving for t, we find the time needed:

[tex]t=\frac{d}{v}=\frac{32}{75}=0.43 h[/tex]

Converting into minutes,

[tex]t=0.43 h \cdot 60 = 25.8 min \sim 26 min[/tex]

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B. A car slowing as it reaches a stop light

Explanation:

According to Newton's second law, the net force exerted on an object is equal to the product between its mass and its acceleration:

[tex]F=ma[/tex]

where

F is the net force

m is the mass of the object

a is its acceleration

This means that when an object is experiencing unbalanced forces ([tex]F\neq 0[/tex]), it must have a non-zero acceleration. Therefore, let's analyze the different options:

A. A box resting on a horizontal floor  --> FALSE. Here the acceleration is zero, so no unbalanced forces.

B. A car slowing as it reaches a stop light  --> TRUE. Since the car is slowing down, its velocity is changing, so the acceleration is non-zero and there are unbalanced forces.

C. A car with its cruise control set to 50 mph  --> FALSE. Here the velocity is constant, so no acceleration and no unbalanced forces.

D. A rocket sitting on the launch pad --> FALSE. Here the rocket is stationary, so no acceleration, and no unbalanced forces.

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An object experiences unbalanced forces when the resultant force on it is non-zero. A car slowing as it reaches a stop light experiences unbalanced forces due to the brakes exerting a force, causing it to decelerate. Hence, the correct answer is B. A car slowing as it reaches a stop light.

In the question, we are asked to determine in which situation an object is experiencing unbalanced forces. An object experiences unbalanced forces when the resultant force acting on it is non-zero, leading to a change in its motion. If we analyze the options given:

Therefore, the correct answer is B. A car slowing as it reaches a stop light, because this is when it is experiencing a net force that is causing a change in its motion.

Answer:

(C) The positive charge of the alpha particles and the negative charge of the electrons  are the properties Rutherford used in his experiment

Explanation:

In his scattering experiment, scientist Ernest Rutherford used the property of positively charged alpha particles and negatively charge electrons. He performed this experiment by passing some of the alpha particles through a gold foil. The result was that the some alpha particles scattered while some passed through the gold foil without collision.

He concluded that the alpha particles are centrally positively charged and needed a large amount repelling force. This experiment of Rutherford is also known as Rutherford model of atom. This experiment helped him in doing so many other discoveries.

Answer:

The current in the circuit will be [tex]5\times 10^{-3}\ Ampere[/tex].

Explanation:

Given:

Voltage difference = V = 5 V

Resistance              = R = 1000 ohms

To Find:

Current, I = ?

Solution:

Ohm's Law:

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

i.e  I ∝ V

∴ V = I × R

Where, I = current

           V = voltage

           R = resistance

Substituting the values of V and R we get

∴ 5 = I × 1000

[tex]I = \frac{5}{1000} \\I=0.005\ Ampere\\I=5\times 10^{-3}\ Ampere[/tex]

Therefore, the current in the circuit will be [tex]5\times 10^{-3}\ Ampere[/tex].

The current in the circuit can be found using Ohm's Law (I=V/R). The given values for voltage and resistance result in a current of 5 milliamperes.

The subject matter in the question falls under the field of Physics, particularly Electricity. The problem is asking for the current in a circuit, based on given values for voltage and resistance. One can solve this by employing Ohm's Law, which describes the relationship between voltage (V), resistance (R), and current (I). Ohm's Law is represented by the formula I = V/R.

Substituting the given values into the formula, the current I is calculated as 5V / 1000Ω, which equals 0.005 Amperes, or 5 Milliamperes (mA). Thus, the current flowing in the circuit is 5 mA.

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Most of the Earth's volume is contained in the "mantle". The correct answer would be option (A).

The mantle is a layer of semi-solid rock that lies between the Earth's thin crust and its liquid outer core. The mantle is approximately 2,900 kilometers (1,800 miles) thick and makes up about 84% of the Earth's total volume.

The crust, mantle, and core are the three coatings of the Earth. The crust is made up of minerals and solid rocks. The mantle lies under the crust and is largely made up of solid rocks and minerals, but it is punctured by pliable patches of semi-solid magma.

It is composed primarily of silicate rocks and is considered to be the source of the Earth's heat and most of its volcanic activity.

The mantle also plays a key role in plate tectonics, which is the theory that explains the movement of the Earth's continents and ocean floor.

Thus, the correct answer would be option (A) mantle.

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1) The initial height of the roller coaster must be 5.1 m

2) The height of the roller coeaster must be 5.5 m

Explanation:

1)

We can solve this problem by using the law of conservation of energy.

In fact, in absence of frictional force, the total mechanical energy must be conserved, so we can write:

[tex]KE+PE = KE'+PE'[/tex]

where

KE = 0 is the initial kinetic energy, at the top (the car starts from rest, so it has zero speed and so zero kinetic energy)

PE = mgh is the initial potential energy, where

m = 8000 kg is the mass of the car

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

h is the initial height

[tex]KE'=\frac{1}{2}mv'^2[/tex] is the kinetic energy of the car at the bottom, where

v' = 10 m/s is the speed of the car at the bottom

PE' = 0 is the potential energy at the bottom (where h = 0)

Re-writing the equation with all the values and solving for h, we find the initial height of the track:

[tex]h=\frac{v^2}{2g}=\frac{10^2}{2(9.8)}=5.1 m[/tex]

2)

In this case, we also have to take into account the energy lost due to friction. So the equation of conservation of energy becomes

[tex]KE+PE = KE'+PE'+W[/tex]

where

W = 32,000 J is the work done by friction

Re-arranging the equation and solving again for h, we find:

[tex]mgh = \frac{1}{2}mv'^2 + W\\h=\frac{v^2}{2g}+\frac{W}{mg}=5.1+\frac{32,000}{(8000)(9.8)}=5.5 m[/tex]

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Answer:

Mass and height

Explanation:

Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about [tex]9.8 m/s2.[/tex]

Which is represented as;

[tex]PE_g=mgh[/tex]

[tex]PE_g[/tex] stands for gravitational potantial energy,

m stands for mass of object,

g is the gravitational constant and

h is the height.

Here we see that mass of object and height is directly proportional to the gravitational potential energy.

That means increasing in mass and height will result in increasing gravitational potential energy.

Explanation:

Use the Ideal Gas Law:

PV = nRT

where P is absolute pressure,

V is volume,

n is number of moles,

R is the universal gas constant,

and T is absolute temperature.

First, identify which variables in the problem are constant (note that R is always a constant).

Next, solve for the constants and use that equation to write a proportion.

Finally, plug in the given values and solve for the unknown variable.

For example, if n and R are the constants:

nR = PV/T

Therefore:

P₁V₁/T₁ = P₂V₂/T₂

1) The force on the wire is 1.5 N

2) The force on the wire is zero

Explanation:

1)

The force experienced by a current-carrying wire in a magnetic field is given by

[tex]F=ILB sin \theta[/tex]

where

I is the current in the wire

L is the length of the wire

B is the magnetic flux density

[tex]\theta[/tex] is the angle between the direction of the wire and of the field

In this part of the problem we have

I = 10 A

L = 2 m

B = 0.15 T

[tex]\theta=30^{\circ}[/tex]

Substituting, we find

[tex]F=(10)(2)(0.15)(sin 30^{\circ})=1.5 N[/tex]

2)

As before, the force experienced by the wire is

[tex]F=ILB sin \theta[/tex]

where

I is the current in the wire

L is the length of the wire

B is the magnetic flux density

[tex]\theta[/tex] is the angle between the direction of the wire and of the field

In this case, however, the angle between the wire and the field is

[tex]\theta=0^{\circ}[/tex]

And therefore

[tex]sin 0^{\circ} = 0[/tex]

which means that the wire does not experience any force. In fact, the force experienced by the wire is zero when the wire is parallel to the field (such as in this case) and maximum when the wire is perpendicular to the field.

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Answer:

change in temperature

Answer:

Change in temperature

Explanation:

did this on edge yesterday and that was the answer

The work done by the brakes is [tex]-3.0\cdot 10^5 J[/tex]

Explanation:

According to the work-energy theorem, the work done by the brakes on the car is equal to the change in kinetic energy of the car. Therefore:

[tex]W=K_f - K_i = \frac{1}{2}mv^2-\frac{1}{2}mu^2[/tex]

where

W is the work done

m is the mass of the car

v is the final speed

u is the initial speed

For the car in this problem, we have:

m = 1500 kg

u = 20 m/s

v = 0 (the car comes to a halt)

Substituting, we find the work done:

[tex]W=0-\frac{1}{2}(1500)(20)^2=-3.0\cdot 10^5 J[/tex]

And the work is negative because the brakes apply a force in the opposite direction to the motion of the car.

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The coefficient of friction is 0.363

Explanation:

There are two forces acting on the scooter in the horizontal direction:

- The applied force, F = 1850 N, forward

- The frictional force, [tex]F_f[/tex], backward

Since the scooter is moving at constant speed, the acceleration is zero, so the net force acting on the scooter must be zero. Therefore we can write:

[tex]F-F_f = 0\\F_f = F = 1850 N[/tex]

The frictional force can be written as

[tex]F_f = \mu R[/tex] (1)

where

[tex]\mu[/tex] is the coefficient of friction

R is the normal reaction of the ground on the scooter

For a flat horizontal surface, there is equilibrium along the vertical direction, so the normal reaction is equal to the weight:

[tex]R = W = mg[/tex]

where

m = 520 kg is the mass

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

Substituting into (1),

[tex]F_f = \mu mg = 1850 N[/tex]

and solving for [tex]\mu[/tex],

[tex]\mu=\frac{F_f}{mg}=\frac{1850}{(520)(9.8)}=0.363[/tex]

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the answer is b,c, and e

Answer:

BCE

Explanation:

Answer:

C

Explanation:

Answer:

The formula for potential energy is, P.E = mgh joules

The formula for kinetic energy is K.E = ½  mv² joules

Explanation:

                                      P.E = mgh joules

                                      K.E = ½  mv² joules

Answer:

The correct answer is option A).

Explanation:

The given reaction is a nuclear reaction.

We know that in a nuclear reaction , the indices on both the sides are conserved , i.e the  total number of nucleons (A) and the total number of protons (Z) should be the same on the L.H.S and the R.H.S-

Total number of nucleons on L.H.S = 241+4 = 245.

Total number of nucleons on R.H.S =  A+1

∴ A+1 = 241+4 = 245

∴ A=244

Total number of protons on L.H.S = 95+2 = 97.

Total number of protons on R.H.S = Z+0

∴ Z+0 = 97.

Z = 97.

Thus the element having A=244 and Z=97 should be the  product of this nuclear reaction.

∴   ₉₇²⁴⁴Bk (option A) should be the required product of this reaction.

Answer: 0 newtons

Explanation: If you push a cart to the right with 5 newtons of force to the right and a friend pushes the cart 5 newtons to the left, there will be no motion.

To understand this further, take a look at the image I provided. I provided two arrows one of the left and on on the right. If two people are pushing on the cart with the same amount of force, the net force will be 0 so it will be a balanced force. When we have a balanced force, there's no motion.

The magnitude of the air drag is 784 N

Explanation:

An object falling down reaches the terminal velocity when the magnitude of the air drag acting on it becomes equal to the weight of the object. Mathematically, this condition can be written as:

[tex]F_D = mg[/tex]

where

[tex]F_D[/tex] is the magnitude of the air drag

m is the mass of the object

g is the acceleration of gravity

In this problem, we have

m = 80 kg is the mass of the airman

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

Substituting into the formula, we find:

[tex]F_D = (80)(9.8)=784 N[/tex]

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Answer:

it will cover 195km in 3 hours

Answer:

The answer is option B, horn.

Explanation:

The landform horn was formed because when glaciers erode down to form a sharp peak which is called a horn. All of the other options are false because none of those land forms are formed because of the erosion of glaciers

Answer:

i think a delta

Explanation:

I might be wrong but I think it leaves behind a delta.

Answer:

Action - Pulling up the train.

Reaction - Friction on the locomotive

Explanation:

Locomotive is pulling the train upwards ,

Which is the action force applied by the locomotive,

As a reaction locomotive will be pulled by the train which is the reaction of pulling

Now, considering it as a action on locomotive , friction force will act on it as a reaction upwards which will result to move it upwards.

For train action is pulling up by locomotive and reaction will be friction acting on it downwards.

Answer:

18N & 360W

Explanation:

Here,

Velocity of car (v) = 72 ∗ 1000 / 60∗60 = 20m/s

weight of car = 1200N

We have,

μr = Fs / R

Fs = μr ∗ R = 0.015 ∗ 1200 = 18N

Power developed by the engine = 18 ∗ 20 =360W

Answer:

Nichrome has __High__melting piont​

Hope this helps

Answer:

high melting point

Nichrome is consistently silvery-grey in colour, is corrosion-resistant, and has a high melting point of about 1,400 °C (2,550 °F).

Explanation:

Answer:

Snell's law tells us the degree of refraction and relation between the angle of incidence, the angle of refraction and refractive indices of given pair of media. We know that light experiences the refraction or bending when it travels from one medium to another medium. Snell's law predicts the degree of the bend.

Explanation:

Final answer:

Snell's law expresses the relationship between the incidence and refraction angles and the indices of refraction of two media, represented by the equation n₁ sin θ₁ = n₂ sin θ₂.

Explanation:

Snell's law describes the relationship between angles and indices of refraction when light passes from one transparent medium to another.

It is an essential concept in the study of optics and can be mathematically expressed as n₁ sin θ₁ = n₂ sin θ₂, where n₁ and n₂ are the refractive indices of the first and second medium, respectively, and θ₁ and θ₂ are the angles of incidence and refraction.

This law is named after the Dutch mathematician Willebrord Snell who described it in 1621, but it was also discovered by the Arabian physicist Ibn Sahl in the 10th century.

Through thorough experiments, it became evident that light rays change direction due to the differing speeds of light in various media, a concept Snell himself was not aware of but was able to confirm through the refractive indices.

Answer: Line graph

Explanation:

Allison needs to graph the yearly average snowfall in Alaska. She should use a:

pie chart

pictograph

bar graph

line graph

Answer:

90km

Explanation:

every hour you travel 30km and you are traveling 3 hours 30×3