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प्रश्न
The energy of a body is its capacity to do .........
उत्तर
The energy of a body is its capacity to do work.
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संबंधित प्रश्न
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?
Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.
Define 1 joule of energy.
State two advantage of producing hydroelectricity.
State the SI unit of work.
A force of 50 N acts on a body and moves it a distance of 4 m on horizontal surface. Calculate the work done if the direction of force is at an angle of 60° to the horizontal surface.
In which of the following case the work done by a force will be maximum : when the angle between the direction of force and direction of motion is 0° or 90°?
A boy does work when he pushes against a brick wall. (yes/no).
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?
Is power a scalar quantity?
Calculate the amount of work done by a child carrying a bag of 20 kg when he moves a distance of 40 m in
(a) Vertical direction, and
(b) Horizontal direction
What should be the characteristic of a source of energy?
A is a push or a pull ______.
A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.
State whether work is done or not, by writing yes or no, in the following case:
A boy climbs up 20 stairs.
