After 28 seconds, the velocity of the object will be 151.2 m/s.
Explanation:The velocity of an object after a given time can be found using the equation:
In physics, the equation used to calculate the velocity of an object when accelerated from rest is v = at, where 'v' is velocity, 'a' is acceleration, and 't' is time passed. In this question, we have an object accelerating from rest at a constant acceleration of 5.4m/s2 for a duration of 28seconds. By substituting the given values into the equation, we get v = 5.4 m/s2 * 28s = 151.2 m/s. Therefore, the velocity of the object after 28 seconds would be 151.2 m/s.
v = u + at
Where:
v is the final velocityu is the initial velocity (in this case, 0 because it starts from rest)a is the acceleration (given as 5.4 m/s2)t is the time (given as 28s)Substituting the known values into the equation:
v = 0 + (5.4 m/s2) * (28s)
Simplifying the equation:
v = 151.2 m/s
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conductive deafness occurs Because of damage to what part of the body
A proton has a mass of 1.672 X 10-27 kg. What is its weight?
Protons are usually regarded by their mass, as mass is not specific to any gravitational acceleration. However, if you wished to find the weight of a proton on Earth, it would be:
Force (weight) = mass of proton * acceleration due to Earth's gravity
F = ma
F = (1.62 x 10^-27)(-9.8)
F = 1.5876 * 10^-26N
Final answer:
The weight of a proton can be calculated using the formula W = mg, where W is weight, m is mass, and g is the acceleration due to gravity. Using the given mass of the proton and the acceleration due to gravity on Earth, we can calculate its weight to be approximately 1.64 x 10^-26 N.
Explanation:
The weight of an object is the force exerted on it due to gravity. The formula to calculate weight is W = mg, where W is the weight, m is the mass of the object, and g is the acceleration due to gravity. In this case, the mass of the proton is 1.672 x 10-27 kg.
To calculate the weight of the proton, we need to know the acceleration due to gravity. On Earth, the acceleration due to gravity is approximately 9.8 m/s2. Using this value, we can calculate:
W = (1.672 x 10-27 kg) x (9.8 m/s2) = 1.64 x 10-26 N
Therefore, the weight of the proton is approximately 1.64 x 10-26 newtons.
Hello, I'm not sure how to solve for a using the Kinematic equation "Don't need Vf". Can anybody help? Heres the problem:
"In an intense game of tug of war, you are pulled from your initial velocity of 2.2 meters per second, travelling 17.5 meters in 5.5 seconds. What is your acceleration as you're being pulled? "
scientist who discovered that arms contain an electric charge
What does the atomic number of an element tell us?
the change in position of an object is
The change in position of an object is called Velocity which tells you that some kind of motion took place but does not let you know the speed in which the object changed position. :)
The change in an object's position is the definition for displacement. A change in position over time is motion.
In a solution, the substance that does the dissolving is called Blank Space __________.
solute
solvent
saturated
precipitate
The answer is Solvent. The reason is in the wording, 'the substance that does the dissolving.' A solvent does the dissolving, a solute is something that can be dissolved.
Answer:
solvent
Explanation:
Think about how you obtain the energy you need to do everyday activities like doing chores, going to school, or playing sports. Explain by writing about it.
ATP is the primary energy currency of the body, providing the energy needed for various processes, including muscle contraction, nerve impulses, and metabolic functions.
How the body gets energy need for daily activitiesEnergy for daily tasks is primarily derived from the food we consume. The body breaks down carbohydrates, fats, and proteins from our diet through digestion.
These macronutrients are then converted into a molecule called adenosine triphosphate (ATP) through cellular respiration, occurring in the mitochondria of our cells.
ATP is the primary energy currency of the body, providing the energy needed for various processes, including muscle contraction, nerve impulses, and metabolic functions. So, when we do chores, go to school, or play sports, it's the result of our cells producing and utilizing ATP to power these activities.
Proper nutrition and a balanced diet are essential to ensure a steady supply of energy for our daily lives.
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The gravitational force between two objects is ______ proportional to the products of the masses and _______ proportional to the square of the distance between them.
The gravitational force between two objects is directly proportional to the products of the masses and inversely proportional to the square of the distance between them.
The law of universal gravitation defines the gravitational force between two objects.
Using the Formula :
[tex] F = \frac{m_{1}m_{2}}{r^{2}}[/tex]
F = Force of attraction m1 = mass of object 1 m2 = mass of object 2 r = distance between the objectsFrom the formula ;
the masses are directly proportional to the attractive force, F The distance, r² is inversely proportional to the to the attractive forceTherefore, the product of the masses are directly proportional and the inversely proportional to the square of the distance apart.
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According to Newton's law of gravitation, the gravitational force between two objects is directly proportional to the products of the masses and inversely proportional to the square of the distance between them.
Mathematically, the formula for expressing Newton's law of gravitation is calculated as [tex]C \alpha\frac{Mm}{r^2}[/tex]
If the proportionality sign is removed, we will introduce a constant known as gravitational constant to have: [tex]C =\frac{GMm}{r^2}[/tex]
Hence based on the formula, the complete statement will be the gravitational force between two objects is directly proportional to the products of the masses and inversely proportional to the square of the distance between them.
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When a concrete road is heated by energy from the Sun, the Concrete will most likely
It will most likely expand when hot and contract when cold.
When a concrete road is heated by energy from the Sun, the Concrete will most likely expand. If no expansion joints have been provided during construction, then it will eventually crack.
How did scientists determine the age of the ocean floor
the layers of rocks, the ancient treasures that are at the bottom of the sea, how old the coral is. But I don't think they determined how old it is, how would the dinosaurs that lived in water swim or any drink water. I don't know if this helps but hopefully it does. Also scientist have made advanced tech that could help with the age determination of the ocean floor.
The majority of the elements on the periodic table are _______. A. gases B. nonmetals C. metals D. liquids
Option (C) is correct that the majority of the elements on the periodic table are metals.
#$# THANK YOU #$#
Answer:
metals
Explanation:
just had answer
Which statement describes why energy is released in a nuclear fusion reaction based on mass-energy equivalence? For large nuclei, the mass of the original nucleus is greater than the mass of the products. For large nuclei, the mass of the original nucleus is less than the mass of the products. For small nuclei, the binding energy of the lighter nuclei is greater than the binding energy of the heavier nucleus. For small nuclei, the binding energy of the lighter nuclei is less than the binding energy of the heavier nucleus.
Answer: Option (c) is the correct answer.
Explanation:
When two or more small nuclei combine together to form a larger nuclei then this process is known as nuclear reaction.
The smaller is an atom, the more energy it requires to release an electron. This energy is known as binding energy.
Thus, when two small nuclei fuse together then there will be more binding energy as compared to when two large nuclei fuse together.
For example, fusion of two hydrogen atoms release more energy then one helium atom, and upon binding excess energy is released into the space.
Hence, we can conclude that energy is released in a nuclear fusion reaction based on mass-energy equivalence because for small nuclei, the binding energy of the lighter nuclei is greater than the binding energy of the heavier nucleus.
Final answer:
Energy is released in a nuclear fusion reaction because the mass of the original nucleus is greater than the mass of the products. This is due to mass-energy equivalence and the conversion of mass into energy.
Explanation:
In nuclear fusion reactions, energy is released because the mass of the original nucleus is greater than the mass of the products. This is based on the concept of mass-energy equivalence, as described by Einstein's equation E=mc². The missing mass in the reaction is converted into energy, and the products of the fusion reaction have a greater binding energy per nucleon (BE/A). Therefore, the larger nucleus formed in the fusion reaction has a greater binding energy and less mass per nucleon, resulting in the release of energy.
I need help with my earth systems homework
Stars exhibit a diverse range of temperatures and luminosities, determining their colors and types. The HR Diagram helps classify them, with main sequence stars like the sun, high-temperature blue supergiants, low-temperature red dwarfs, and evolved stars such as white dwarfs and red supergiants, showcasing the rich tapestry of stellar evolution.
5 - The color of the stars with the highest surface temperature is blue.
Stars emit different colors of light depending on their temperature. Higher temperatures, like those of blue stars, result in shorter wavelengths, while lower temperatures, like those of red stars, result in longer wavelengths.
6 - The color of the stars with the lowest surface temperature is red.
Red stars generally have lower surface temperatures, and they emit light at the longer, red end of the spectrum.
7 - The color of the stars from hottest to coldest is: blue, white, yellow, orange, red.
The sequence represents the color of stars from the hottest (blue) to the coolest (red). White stars fall between blue and yellow.
8 - Most of the stars on the HR Diagram are classified as main sequence stars.
The Hertzsprung-Russell (HR) Diagram is a graph of stars' luminosity (brightness) against their surface temperature. Most stars, including our Sun, fall into the main sequence category, where they spend the majority of their lives.
9 - The type of star that has a high temperature but a low luminosity is a white dwarf.
White dwarfs are hot but have low luminosity because they are small and no longer undergoing nuclear fusion in their cores.
10 - The type of star that has a high temperature and high luminosity is a blue supergiant.
Blue supergiants are massive stars with high temperatures and luminosities. They are in the later stages of their evolution and have expanded in size.
11 - The type of star that has a low temperature but high luminosity is a red supergiant.
Red supergiants are large, cool stars with high luminosities. They are in the late stages of their evolution.
12 - The type of star that has low temperature and low luminosity is a red dwarf.
Red dwarfs are small, cool stars with relatively low luminosities. They are the most common type of star in the universe.
Plotting Table: Letter - Temperature - Luminosity - Color - Type Of Star
A - 6,000 K - 10^1 - Yellow - Main Sequence
B - 20,000 K - 10^6 - Blue - Blue Supergiant
C - 20,000 K - 10^3 - White - White Dwarf
D - 2,500 K - 10^2 - Red - Red Supergiant
E – 4000 K – 10^-2 - Orange - Red Dwarf
Define kinetic energy and thermal energy. Describe what happens to each as the temperature of the substances increases
Kinetic energy is the amount of energy a object has while it's in motion, and thermal energy is heat energy. In this case when the heat rises in substances for example a solid it will transform into a liquid causing the molecules to move faster which is a increase of kinetic energy. So the answer is "when the heat in substances increase the kinetic energy increases."
Hope this helps!
Answer:
All matter is made up of particles that are constantly moving. The motion of the particles results in kinetic energy. The part of total internal energy that can be transferred is thermal energy. As temperature increases, the particles in a substance move faster and have greater kinetic and thermal energy.
A 13 kg rock is sitting on a cliff. If the rock has 3,500 joules of potential energy, what is the height of the cliff in meters?(Round the answer to the nearest tenth. Show work
Answer:
The height of the cliff in meters = 27.44
Explanation:
The potential energy of a body is given by the expression, PE = mgh, where m is the mass of the body, g is the acceleration due to gravity value and h is the height of the body.
Here we have mass of rock = 13 kg
Potential energy = 3500 J
Acceleration due to gravity = [tex]9.81m/s^2[/tex]
Substituting 3500 = 13 * 9.81 * h
h = 27.44 meter
The height of the cliff in meters = 27.44
Two electronics technicians are discussing conductors and insulators. Technician A says that conductors have more free electrons than insulators. Technician B says that insulators have lower resistance than conductors. Which of the following statements is correct?
Technician A is Correct.
You can see this when he says that conductors have more free electrons than insulators. This statement is True.
While Technician B says that, insulators have the lower resistance than conductors. This statement is False.
Number 3,4, 6, and 8
1. When the object is waiting to be released, it is storing a lot of potential energy. When it is released, the potential energy that was once stored is converted into kinetic energy.
on a roller coaster ride at an amusement park, a car travels from 7.6 m/s to 56 m/s in 3 seconds. whats the cars acceleration?
a) no acceleration
b) 11 m/s^2
c) 235 m/s^2
d) 16 m/s^2
Acceleration is defined as rate of change in velocity
So we can write its formula as
[tex]a = \frac{v_f - v_i}{t}[/tex]
here we know that
[tex]v_f[/tex] = final velocity = 56 m/s
[tex]v_i[/tex] = initial velocity = 7.6 m/s
t = time interval to change the velocity = 3 s
now we will plug in all values in the above equation
[tex]a = \frac{56 - 7.6}{3}[/tex]
[tex]a = \frac{48.4}{3}[/tex]
[tex]a = 16.13 m/s^2[/tex]
so here roller coaster will accelerate at rate of 16 m/s^2 and hence correct answer is "option d"
Which type of atom is expected in the reactants of this chemical reaction? ? Fe2O3
The given question is incomplete, here is a complete question.
Which type of atom is expected in the reactants of this chemical reaction?
[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]
A. iron (Fe)
B. gold (Au)
C. nitrogen (N)
D. chlorine (Cl)
Answer : The type of atoms expected in the reactant of the chemical reaction is, iron (Fe)
Explanation :
Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.
The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.
The balanced chemical reaction is:
[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]
The given molecule is made up of two elements that are iron and oxygen.
In the given equation, iron and oxygen are reactants and [tex]Fe_2O_3[/tex] is the product.
Hence, the type of atoms expected in the reactant of the chemical reaction is, iron (Fe)
A car traveled 330 miles in 6 hours. What is the average speed?
it is 55 mph that is ok
Final answer:
The average speed of a car that traveled 330 miles in 6 hours is calculated by dividing the distance by the time, resulting in an average speed of 55 mph.
Explanation:
To calculate the average speed of the car, we need to divide the total distance travelled by the total time taken for the trip. In this case, the car travelled 330 miles in 6 hours.
The formula for average speed is:
Average Speed = Total Distance ÷ Total Time
Inserting the given values into the formula:
Average Speed = 330 miles ÷ 6 hours = 55 miles per hour (mph)
This means the car's average speed was 55 mph on that particular trip.
Choose the correct statement about the periodic table's organization from the choices below.
An object on the surface of the earth weighs 90 lb. at three earth radi above the surface it will weigh
Answer:
10lb
Explanation:
A square metal plate 1.5m side and 1.2mm thick weighting 50N is to be lifted through a vertical gap at 25mm of infinite extent . The oil in air gap has a specific gravity of 95 percent and viscosity of 2.5N.s/m^2. if the metal plate is to be lifted at a constant speed of 0.1m/s find the force and power required.
Viscous force on the plate is given by
[tex]F = \eta A \frac{dv}{dx}[/tex]
[tex]F_v = 2.5* 1.5*1.5 * \frac{0.1}{1.2* 10^{-3}}[/tex]
[tex]F_v = 468.75 N[/tex]
Buoyancy force on the plate is given as
[tex]F_b = \rho V g[/tex]
[tex]F_b = 950* 1.5*1.5*1.2*10^{-3} * 9.8[/tex]
[tex]F_b = 25.14 N[/tex]
Weight of the plate = 50 N
Now for constant speed of plate the net force on it must be zero
SO here we can say
[tex]F_v + W = F_b + F[/tex]
[tex]468.75 + 50 = 25.14 + F[/tex]
[tex]F = 493.6 N[/tex]
So it will require a constant force of 493.6 N
The total force required to lift the metal plate at a constant speed of 0.1 m/s through the oil-filled gap is 72.5N. The power required to do this is 7.25 Watt.
Explanation:The subject of this problem can be understood with fluid mechanics, particularly focusing on the concepts of viscosity and drag. Using the formula for viscous force: F = ηAv/d where η is the viscosity of the liquid (2.5 N.s/m²), A is the area of the plate (1.5m x 1.5m = 2.25 m²), v is the velocity of the plate (0.1 m/s), and d is the distance of the gap (25mm = 0.025 m). The force can be calculated as F = 2.5 x 2.25 x 0.1 / 0.025 = 22.5 N.
This is the extra force required to overcome the drag due to the viscosity of the oil. But we should also lift the weight of the plate, so the total force required is 50N (weight) + 22.5N (Viscous force) = 72.5N.
Power is calculated by multiplying the total force by the velocity of the motion. Hence, power = force x velocity = 72.5N x 0.1m/s = 7.25 Watt.
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when a car stops, the brakes heat up because of friction. what is this an example of?
a. elastic motion
b. periodic motion
c. energy being destroyed
d. one form of energy being converted to another
A. elastic motion because that's the answer
The given statement is an example of one form of energy is being converted to another
Answer: Option D
Explanation:
A car is is stopped due to the application of brakes to bring it back to rest. This is an example of kinetic energy as work is done to stop the car. When brakes are applied, heat is produced due to the friction between the wheels and the brakeshoes which is an example of heat or thermal energy. Hence kinetic energy is transformed into thermal energy in this application.
Give 3 examples, from the lab, where potential energy was converted to kinetic energy.
1. The red ball was potential energy until it was hit by the pendulum converting into kinetic energy.
2. The 5 pounds was a potential energy, until the rope was cut by the scissors, this made the 5 pounds become kinetic energy.
3. The bucket was a potential energy, till the books landed in it causing it to fall, this became kinetic energy
Examples of potential energy being converted into kinetic energy include a roller coaster ride simulation, the operation of a combustion engine, and an activity in the Snap Lab.
Explanation:Potential energy is converted into kinetic energy in various instances during lab activities. Here are three specific examples:
Roller Coaster Simulation: During a roller coaster ride simulation, potential energy (possessed by the roller coaster at the summit of a hill) was converted into kinetic energy as the roller coaster descended the hill (Figure 6.11).Combustion Engine: In a demonstration of how combustion engines work, chemical energy (a type of potential energy stored in gasoline) is converted into mechanical energy (a type of kinetic energy) during combustion inside engine cylinders.Snap Lab: An activity known as Snap Lab, involved calculating the potential energy of an object, predicting its speed when potential energy was entirely converted into kinetic energy, and checking predictions.Learn more about Potential to Kinetic Energy here:https://brainly.com/question/15764612
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What is the acceleration of someone who reached a top speed of 31.4 ft/s in 1.2 s? They started from a velocity of zero.
Given:
u(initial velocity)=0
v(final velocity)=31.4ft/s=9.57m/s
time taken to cover the distance=1.2 s
Now we know that
v = u + at
Where v is the final velocity
u is the initial velocity
a is the acceleration
t is the time taken to cover the distance
Substituting the given values in the above formula we get
v= u + at
9.57=0+ ax1.2
a=26.17 m/s^2
The idea that mental states are dispositions to behave in particular ways in certain Circumstances is known as
Answer;
Logical behaviorism
Explanation;
Behaviorism is a learning theory that only focuses on objectively observable behaviors and discounts any independent activities of the mind. Behavior theorists define learning as nothing more than the acquisition of new behavior based on environmental conditions.
Logical behaviorism is at odds with our commonsense intuition that mental states cause behavior.
The farmer driving this tractor is spreading pesticides on the crops. What type of pollution is this an example of?
A. point source
B. non-point source
C. environmental source
D. non-environmental source
Answer:
Option-(D): The farmer driving this tractor is spreading pesticides on the crops is considered as the non-environmental source of pollution.
Explanation:
Pollution is the imbalance in the over all elements of the environment(i.e biosphere and lithosphere etc). While, some of the pollutants are non-environmental that are not related to any sort of the environment factors. But, they are added intentionally due to the fact that people take the planet and its resources all for granted and these elements then disturbs the whole balance of the environment.
Which is the correct formula used to calculate work?
A W = ld
B W = Fh
C W = lh
D W = Fd
d work = force times distance ... if force is constant
Answer:
Work, W =Fd
Explanation:
Work is said to be done when a force is applied on an object in order to create some displacement. The mathematical expression for work done is given as:
W = F. d
Where
F is the applied force
d is the displacement
Work done also depend on the angle between the force and the displacement i. e.
[tex]W=Fd\ cos\ \theta[/tex]
[tex]\theta[/tex] is the angle between F and d
When the force and displacement are in same direction then [tex]\theta=0[/tex]. It gives W = F. d
When the force and displacement are perpendicular to each other, [tex]\theta=90[/tex]. It gives W = 0
Similarly, When force and displacement are in opposite direction, [tex]\theta=180[/tex]. It gives W = - F. d
So, the correct option is (D) '' W =Fd ''