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प्रश्न
Complete the following sentences:
Kilowatt is the unit of ....... and kWh is the unit of
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उत्तर
Kilowatt is the unit of power and kWh is the unit of energy
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संबंधित प्रश्न
Define 1 J of work.
In which of the following cases is work being done:
- A boy pushing a heavy rock
- A boy climbing up the stairs
- A coolie standing with a box on his head
- A girl moving on the road.
Define 1 joule of energy.
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.
What is the relationship between Nm and dyne cm?
A weight lifted a load of 200 kgf to a height of 2.5 m in 5 s. calculate: (i) the work done, and (ii) the power developed by him. Take g= 10 N kg-1.
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
Why is less effort needed to lift a load over an inclined plane as compared to lifting the load directly?
