1.

An electric motor of power 100 W is used to drive the stirrer in a water bath. If 50% of the energy supplied to the motor is spent in stirring the water,calculate the work done on water in one minute.

Answer»

Solution :Given ,power SUPPLIED =100Q,time t=1 MINUTE =60 s power used in stirring the water
=50% of the power supplied
`(50)/(100)xx100 W=50 W`
Work done on water =power used `XX` time


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