Advertisements
Advertisements
प्रश्न
State the energy changes in the following while in use A loudspeaker .
Advertisements
उत्तर
A loudspeaker - Electrical energy to sound energy
APPEARS IN
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 :
Burning coal while operating a steam engine.
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 unwinding of a watch spring.
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.
State the energy changes in the following case while in use:
Washing machine
State the energy changes in the following case while in use:
Bio-gas burner
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. What happens to the mechanical energy after the ball hits the ground and comes to rest?
Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it.
(a) How much work is done by the men in lifting the box?
(b) How much work do they do in just holding it?
(c) Why do they get tired while holding it? (g = 10 m s–2)
State the energy changes in the following case while in use:
A glowing electric bulb
