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प्रश्न
State the energy changes which take place when:
Burning of coal.
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उत्तर
The chemical energy changes into heat energy.
संबंधित प्रश्न
What name is given to the heat energy obtained from hot rocks inside the earth?
A body of mass m falls down through a height h. Obtain an expression for the work done by the force of gravity.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving bus
What is nuclear energy?
Two bodies A and B of masses m and M (M ≫ m) have same kinetic energy. Which body will have more momentum?
Name a device in which solar energy is converted into electricity state its two uses.
State the energy changes which take place when:
A battery lighting up a bulb.
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
You might have seen some beautiful fireworks during Diwali. It is an example of the transformation of ______ energy into ______ energy.
A good fuel should possess:
