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प्रश्न
Differentiate between the potential energy (U) and the kinetic energy (K).
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उत्तर
| Potential energy (U) | Kinetic energy (K) |
| 1. The energy possessed by a body by virtue of its specific position or changed configuration is called potential energy. | 1. The energy possessed by a body by virtue of its state of motion is called kinetic energy. |
| 2. Two forms of potential energy are gravitational potential energy and elastic potential energy. | 2. Forms of kinetic energy are translational, rotational and vibrational kinetic energy. |
| 3. Example: A wound up watch spring has potential energy. | 3. Example: a moving car has kinetic energy. |
संबंधित प्रश्न
Geothermal energy is produced by the:
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances
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A bullet fired from a gun.
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(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
Name the form of mechanical energy, which is put to use.
Name six different forms of energy?
What is tidal? Explain in brief.
State the energy changes which take place when:
A body thrown vertically upwards from the ground.
Give one example when:
Mechanical energy changes to electric energy.
The solar cooker is an application of the ______ energy of the sun, while solar cells, solar lamps are applications of the ______ energy of the sun.
Geothermal energy is:
