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प्रश्न
Complete the following sentences:
Joule is the unit of .......
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उत्तर
Joule is the unit of work
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संबंधित प्रश्न
State two factors on which the work done on a body depends.
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
A body does 20 J of work in 10 s. What is its power?
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
Explain, why submarines are able to dive underwater as well as a sail on the surface of the water?
An electric motor of power 100 W is used to drive the stirrer in a water bath. If 50% of the energy supplied to the motor is spent in stirring the water. Calculate the work done on the water in one minute.
