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संबंधित प्रश्न
A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
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 nuclear energy.
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
Name a device in which solar energy is converted into electricity state its two uses.
State two advantages and disadvantages of using nuclear energy for producing electricity.
State the energy changes which take place when:
A car moves up a hill.
Can you tell?
Describe one natural chain of transformation of energy.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A compressed spring
