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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 burning of a match stick.
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उत्तर
Chemical energy changes into heat and light energy.
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संबंधित प्रश्न
State the energy changes in the following while in use An electric oven.
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 a loaded truck when started and set in motion.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in photosynthesis in green leaves.
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?
A boy is moving on a straight road against a frictional force of 5 N. After travelling a distance of 1.5 km he forgot the correct path at a roundabout (Fig. 11.1) of radius 100 m. However, he moves on the circular path for one and half-cycle and then he moves forward up to 2.0 km. Calculate the work done by him.
Can any object have mechanical energy even if its momentum is zero? Explain.
The energy conversion in a washing machine is from ______.
State the energy changes in the following case while in use:
An electric cell in a circuit
In an electric cell while in use, the change in energy is from ______.
