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प्रश्न
State the energy changes in the following case while in use:
loudspeaker
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उत्तर
Electrical energy into 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 a watch spring while it unwinds.
State the energy changes in the following while in use A loudspeaker .
State the energy changes that occur in the following :
The unwinding of a watch spring.
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 car going uphill.
State the energy changes in the following case while in use:
Washing machine
State the energy changes in the following case while in use:
A solar cell
Choose the odd one:
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)
