How much energy does a computer (P=130) uses in 10 hours?
Though you have not mentioned the unit of P, however, my best guess is that you meant 130Watt.
So,
A Watt is a unit of power,that is energy per unit of time,a watt is a Joule per second,130 W is then 130 Joules/s.
Therefore, in 10 hours it will use 130W*10hours*3600s,(an hour has 3600 seconds),that is 4680000Joules
Hope this helps :)
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