1.

The amount of work done in pumping water out of a cubical vessel of height 1 m is nearly

Answer»

5000 J 
10000 J 
50 J
10 J 

Solution :`W = 1 m xx 1 m xx 1m xx 1000 kg m^(-3) xx 10 ms^(-2) xx 1/2 m`
`=5000 J`


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