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प्रश्न
State the energy changes which take place when:
A car moves up a hill.
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उत्तर
The kinetic energy of moving car changes to potential energy.
संबंधित प्रश्न
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
Fill in the blank
An object falling freely from the roof of a multistorey building has ________ and _________ energy when halfway down the building.
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
How is wind energy used to produce electricity?
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
State two advantages and disadvantages of using nuclear energy for producing electricity.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
Give one example when:
Light energy changes to chemical energy.
