When running on its 11.4 v battery, a laptop computer uses 8.3 w. the computer can run on battery power for 8.0 h before the battery is depleted. a)what is the current delivered by the battery to the computer? b)how much energy, in joules, is this battery capable of supplying? c)how high off the ground could a 75 kg person be raised using the energy from this battery?

(a) Current i =0.7280 A

(b) Energy = 238993.922 j

(c) Height h = 325.161 m

Explanation:

We have given that voltage V = 11.4 Volt

Power P = 8.3 Watt

Time t = 8 hour

We know that 1 hour = 3600 sec

So 8 hour = 28800 sec

(a) We have to calculate current

We know that power = voltage ×current

Current

(b) We have to calculate the energy

Resistance is given by

We know that energy

(a) Energy required to lift the mass is given by mgh

So

We have given mass m = 75 kg

So

h=325.161 m