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प्रश्न
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
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उत्तर
The mechanical energy changes to potential energy during winding. The potential energy is then released in the form of kinetic 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.
Define calorific value of a fuel.
Explain how, geothermal energy is used to generate electricity.
A bucket full of water .is on the first floor of your house and another identical bucket with same quantity of water is kept on the second floor. Which of the two has greater potential energy ?
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
Name the physical quantity measured in terms of horse power.
Renewable source of energy is:
Name the form of energy in which potential energy can change.
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
You might have seen some beautiful fireworks during Diwali. It is an example of the transformation of ______ energy into ______ energy.
