Advertisements
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
State the energy changes in the following case while in use:
A ceiling fan
State the energy changes in the following while in use A loudspeaker .
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.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in respiration.
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.
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 ______.
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.
A light and a heavy object have the same momentum. Find out the ratio of their kinetic energies. Which one has larger kinetic energy?
