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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
Give one example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
Name the physical quantity measured in terms of horse power.
Name five renewable sources of energy.
State two uses of solar cells.
How much electric power is generated in India using the wing energy?
State the energy transformation on the following:
Electricity is obtained from hydro energy.
State the energy changes which take place in Electricity is obtained from solar energy.
Name the two groups in which various sources of energy are classified?
What ts the original source of energy for the electricity produced at a thermal power station?
Use your brain power!
Why do tablets of camphor decrease in size day by day?
