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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
State two factors on which the kinetic energy of a moving body depends.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A compressed spring
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
State the energy transformation on the following:
Electricity is obtained from wind energy.
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
How is kinetic energy possessed by a moving body measured?
What kind of energy is possessed in a situation when?
A fish moving in the water.
State the energy changes which take place when:
During electrolysis.
Give one example when:
Mechanical energy changes to electric energy.
