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प्रश्न
Tick the most appropriate answer.
The force applied on a machine to do work is called the
पर्याय
load
effort
efficiency
fulcrum
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उत्तर
effort
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संबंधित प्रश्न
Write true or false of the following statement.
In an electric fan, electrical energy changes into the mechanical energy.
Fill in the blank
An electric fan converts electrical energy into ______ energy.
Fill in the blank
The S.I.unit of energy is ______
State two factors on which the potential energy of a body at a certain height above the ground depends.
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
How many joules are there in one kilowatt-hour?
Can you tell?
What should be taken into account for measuring work?
Observe the picture and put a tick (✓) if work is done and put a cross (x) if work is not done.
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Running water possesses ______.
Which one of the following is not the unit of energy?
