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प्रश्न
Name the quality which is measured in kWh.
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उत्तर
Energy is measured in kWh
संबंधित प्रश्न
When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall
1) Name the force exerted by the table top
2) What is the direction of the force?
How is work done by a force measured when the force is in the direction of displacement?
A body is moved in a direction opposite to the direction of force acting on it. State whether the work is done by the force or work is done against the force
One horse power is equal to ______.
What is a centripetal force?
Work done by a force is equal to the product of ....... and ....
A pump is used to lift 600 kg of water from a depth of 75 m in 10s. Calculate:
- The work done by the pump,
- the power at which the pump works, and
- The power rating of the pump if its efficiency is 40%. (Take g = 10m s-2).
`["Hint" : "Efficiency" = "useful power"/"power input"]`
A force F when acts on a body, displace it by a distance d in a direction at an angle θ with the direction of the force. Write down the expression for the work done by the force.
State the C.G.S. unit of work. How it is related to its S.I. unit?
A man weighing 700 N runs up a flight of 15 steps, each 20 cm high, in 5 seconds. Calculate the power of the man.
