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A tubewell pumps out 2400 kg of water per minute If water is moving with a velocity of 3 ms what is power of the pump

how much work is done if pump runsfor 10 hrs

(ii)A car weighing 1120 kg is going up an incline of 1 in 56 at rate of 20 m in 2 s find power of engine if frictional froce is 64 n

(iii)a train weighing 100 metric tonne is running on a level track with a uniform speed of 72 kmh if frictional resistance amounts to 0.5 kg per metric tonne find power of engine

(iv)a pump can throw 10 quintals of coal per hrfrom a cola mine 120 m depth calculate power of engine in watt assuming that efficiency is 80%

1
by rajusetu

i dont know whether

what

pzl asnwer them

before today

plz

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