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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.
उत्तर
Chemical energy changes into heat, light and sound energy.
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संबंधित प्रश्न
State the energy changes in the following while in use An electric bulb.
State the energy changes in the following while using a microphone.
State the energy changes that occur in the following :
Lighting of a torch bulb.
State the energy changes in the following case while in use:
Burning coal
State the energy changes in the following case while in use:
An electromagnet.
Explain conservation of energy.
Law of conversation of energy given by ______.
What is law of conservation of energy?
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.
