answer me with explanation Q.8 & Q9
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8) 250×3.6×10^8=9×10^8joules
9)p=w/t
=mgh/t
=30×6×10/60
=30 watt
8) 250×3.6×10^8=9×10^8joules
9)p=w/t
=mgh/t
=30×6×10/60
=30 watt