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प्रश्न
State the energy changes in the following case while in use:
a ceiling fan
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उत्तर
electrical energy into mechanical energy
संबंधित प्रश्न
Define calorific value of a fuel.
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.
Two toy-cars A and B of masses 500 g and 200 g respectively are moving with the same speed. Which of the two has the greater kinetic energy?
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving bus
Select the renewable and non-renewable sources of energy from the following:
Coal
State four ways for the judicious use of energy.
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
What kind of energy is possessed in a situation when?
A stone, in a stretched catapult.
Draw a diagram to show the energy changes in an oscillating simple pendulum. Indicate in your diagram how the total mechanical energy in it remains constant during the oscillation.
When and why do clothes smell of naphthalene?
