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प्रश्न
Name the quality which is measured in Wh.
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उत्तर
Energy is measured in Wh
संबंधित प्रश्न
A boy weighing 40 kgf climbs up a stair of 30 steps each 20 cm high in 4 minutes and a girl weighing 30 kgf does the same in 3 minutes. Compare:
- The work done by them.
- The power developed by them.
Differentiate between work and power.
An ox can apply a maximum force of 1000 N. It is taking part in a cart race and is able to pull the cart at a constant speed of 30 ms-1 while making its best effort. Calculate the power developed by the ox.
What do you understand by the clockwise and anti clockwise moment of force?
A mechanic can open a nut by applying a force of 200 N while using a lever handle of 50 cm length. How long handle is required if he wants to open it by applying a force of only 50 N?
Work done by a force is equal to the product of ....... and ....
In the following case write yes, if the work is being done and no if no work is being done.
A man moving on the rough ground.
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
A coolie carrying a load on his head and moving on a frictionless horizontal platform does no work. Explain the reason why.
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person walks on a levelled road.
