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प्रश्न
Give one example when:
Kinetic energy changes to heat energy.
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उत्तर
When two stones are rubbed against each other, kinetic energy changes to heat energy.
संबंधित प्रश्न
State two disadvantages of geothermal energy.
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
State the energy changes in the following case while in use:
an electric cell in a circuit
Name the two groups in which various sources of energy are classified. State on what basis are they classified.
Select the renewable and non-renewable sources of energy from the following:
Wood
Name the energy changes for the following
human body
A ball of mass 0.5 kg slows down from a speed of 5m/s-1 to that of 3m/s-1. Calculate the change in kinetic energy of the ball.
Write the type of energy possessed in the following case:
A wound-up spring
What is meant by energy?
