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प्रश्न
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उत्तर
When the head of a nail is struck with a hammer, the mechanical energy of the hammer pushes the nail into the plank of wood and in this process a part of energy is converted into heat energy.
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संबंधित प्रश्न
Fill in the blank
The energy possessed by a body due to its position is called ________ energy.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
Name six different forms of energy?
Is it possible that a body may possess energy even when it is not in motion?
Write the type of energy possessed in the following case:
A moving cricket ball.
What is the main energy transformation that occur in:
Charging of a battery.
Give two examples each of renewable and non-renewable sources of energy?
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
