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I lift a book from the floor and place it on my desk.
The amount of work I do on the book is the amount by which
its gravitational potential energy has increased . . .
M G H
where 'M' = mass of the book, 'G' = acceleration of gravity, 'H' = height of the table above the floor.
By the way, when I increased the energy of the book, I also increased its mass. The change in mass is
dM = dE / c2
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∙ 14y ago
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How does kinetic energy and potential energy switch?
work=change in kinetic energy, doing work on an object by moving it up increases that object's potential energy because it has the POTENTIAL to fall due to gravity. kinetic energy is lost in the movement of the object. However, throughout an entire closed system, the total energy in joules (or kinetic enery plus potential energy) does remain constant. this is useful because the initial energy and the final energy most be equal, and if thats true, then initial kinetic energy plus initial potential energy must equal final kinetic energy plus final potential energy. does that help?
What is the diffrence between kinetic energy and potential energy?
kinetic energy is energy being exerted like while your running or jogging and potential energy is energy that is being stored up while doing nothing such as standing or staring your building up potential energy
What is the difference between chemical energy and knetic energy?
kinetic is motion energy. ex- running, ball rolling down a hill, doing pushups, clapping, car speeding down the highway.
Do you use up more energy doing mental or physical work?
Doing physical work allows you to increase your caloric turnover up to 10 times, doing mental work has little or no effect on your metabolic rate.
Is the energy that a body in movement possess?
Slinky! No, seriously. A slinky at the top of the stairs has POTENTIAL energy, a slinky falling down the stairs has KINETIC energy. Things with the potential to release energy have POTENTIAL energy. Things currently releasing that energy have KINETIC energy. Of course, it could also be a block of uranium, and it's got energy no matter what it's doing. Or it could be a chunk of wood sitting there, it's got thermal & light energy stored inside it, which would be released by rapid oxidization (burning).
How does kinetic energy and potential energy switch?
work=change in kinetic energy, doing work on an object by moving it up increases that object's potential energy because it has the POTENTIAL to fall due to gravity. kinetic energy is lost in the movement of the object. However, throughout an entire closed system, the total energy in joules (or kinetic enery plus potential energy) does remain constant. this is useful because the initial energy and the final energy most be equal, and if thats true, then initial kinetic energy plus initial potential energy must equal final kinetic energy plus final potential energy. does that help?
What is the relationship between the kinetic energy and the physical state of the substance they compose?
Kinetic energy is energy of matter. The kinetic is doing work. Tempature is measured of average energy of motion, particles of matter. The physical is pretty much doing the same thing as the kinetic. They both are doing work.
Doing work on an object increases the object's kinetic?
velocity increases
Energy doing a job is called?
kinetic energy
You can increase the pressure of gas by doing what?
You could decrease the volume available to the gas or by increasing the kinetic energy of the particles. Although, after initial increase in temperature, the gas loses its ability to expand on increase in temperature.
What type of energy is used by objects doing work?
kinetic energy
Is the following sentence true or false kinetic energy is related to an objects height?
Only in a particular way. Kinetic energy is given by the formula 1/2 X mass of object X Velocity of object X Velocity of object. So if, say, a car of mass 1000 kg was travelling along a level road with a velocity of 10 metres per second, its kinetic energy would be 1/2 x 1000 x 10 x 10 or 50000 Joules If the car was travelling along a different road, higher up a mountain, say, doing the same speed, then the kinetic energy would be the same. So in this case the kinetic energy would be unaffected by height. HOWEVER... If the car fell from a cliff, then the height of the cliff wouldmatter. A short drop would mean that when it hit the ground the car's velocity would be small, and so its kinetic enery would be small. From a high cliff it would fall more distance, and so the car would have more time to acellerate to a greater speed (as gravity pulled it down) so that when it hit the ground it would be travelling quickly and hence its kinetic energy would be high. Height affects Potential Energy - the greater the height the greater the energy. If the car is high up, the large amount of potential energy is converted into a large amount of kinetic energy as the car falls. On impact the kinetic energy turns into sound (the crash) and heat.
How is potential energy similar to kinetic energy?
Mass Kinetic energy = 1/2 · mass ∙velocity2 Potential energy = mass ∙ (acceleration due to gravity) ∙ height Mass is common to both Kinetic energy is the energy due to motion. The faster an object (mass) is moving; the more Kinetic energy is has. Potential energy is the energy due to position. The higher an object (mass) is off the earth's surface, the more Potential energy it has.fcfytrdddrdrdrdrdrdrdrdrdrdrdrdrdrdrdrdrdrtdjgrfxnzsdfcxzdfgv dorkk
What are you doing with energy when you pick up a book?
transfering the kinetic energy in your hand to the book
How does doing work on an object change its energy?
doing work changes the energy because energy is begining transferred to the object and the power will be equal to the amount of energy transferred.
What is the differences between energy types?
Potential energy and Kinetic energy. Potential energy comes in forms that are stored, including - Chemical, Gravitational, Mechanical and Nuclear. Kinetic energy forms are doing work - Like electrical, heat, light, motion and sound. Difference between them both are, Potential energy can be stored and Kinetic energy is already doing work and can't be stored. Hope this helps =)
What is the relationship between kinetic energy of molecules and their physical state?
The relationship between kinetic energy of molecules and their physical state is simple. The higher the kinetic energy the faster the molecules move. The fastest moving molecules are gaseous and the slowest moving molecules are solids.
