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प्रश्न
Give one example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
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उत्तर
During the vertical fall of ball, if friction due to air is neglected, the total sum of potential energy and kinetic energy at each point of its path remains same.
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संबंधित प्रश्न
State the energy change in the following device while in use:
A loudspeaker
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
A stretched wire
State the energy changes in the following case while in use:
an electric bulb
What is geo thermal energy? Explain in brief.
What kind of energy is possessed in a situation when?
A fish moving in the water.
State the energy changes which take place when:
A magnesium ribbon burns in air.
State the energy changes which take place when:
Burning of coal.
Give one example when:
Mechanical energy to heat energy.
Geothermal energy is:
