Question

how much time does it take to perform 500J of work at a rate of 10 W ?

Answer 1

power=work/time  work=500 J     POWER=10 W    work=power x time   time=work/ power=500J/10W==500J/10J/S=50SEC

Answer 2

50 sec time is required to perform 500 J of work at a rate of 10 W.  

Explanation:

The work needs to be performed is 500 J.  

The rate of the work is 10 W.

So according the formula  

The power is the rate at which the work is completed or energy is converted. The unit is Watt.  

Then the $\text { Power }=\frac{Work}{Time}$

Work = 500J and power =10W  

$\text { Time }=\frac{500}{10}$

Time = 50 sec.  

To know more

A MAN WHOSE mass is 50 kg climbs up 30 steps of a stair in 30 secs, if each step is 20 cm high, then calculate power consumed in climbing upstairs? (pls solve both numericals urgently )

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