Answers

2014-11-20T16:16:39+05:30
Power=work/time
time=work/power =500/10=50 sec
plz mark as best
hoped i help u

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2014-11-20T20:49:22+05:30
Power=work/time  work=500 J     POWER=10 W    work=power x time   time=work/ power=500J/10W==500J/10J/S=50SEC
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