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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
A body of mass m is moving with a velocity v. Write the expression for its kinetic energy.
State two advantages of using wind energy for generating electricity.
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
What is the main energy transformation that occur in:
Charging of a battery.
State two advantages and disadvantages of using nuclear energy for producing electricity.
State the energy changes which take place when:
Food is digested by animals.
Give one example when:
Chemical energy changes to light energy.
Can you tell?
Describe one natural chain of transformation of energy.
The major problem in harnessing nuclear energy is how to
