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प्रश्न
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the Explosion of crackers.
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उत्तर
Chemical energy changes into heat, light and sound energy.
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संबंधित प्रश्न
State the energy changes in the following case while in use:
An electric iron
State the energy changes that occur in the following :
An electric generator (or dynamo).
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the Charging of a battery.
State the energy changes in the following case while in use:
A solar cell
State the energy changes in the following case while in use:
A petrol engine of a running car
Law of conversation of energy given by ______.
Avinash can run with a speed of 8 m s–1 against the frictional force of 10 N, and Kapil can move with a speed of 3 m s–1 against the frictional force of 25 N. Who is more powerful and why?
Can any object have mechanical energy even if its momentum is zero? Explain.
The power of a motor pump is 2 kW. How much water per. the minute the pump can raise to a height of 10 m? (Given g = 10m s−2)
The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.
