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4.15

10 June 2011

11:54

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4.15 use the relationship between power, work done (energy transferred) and time taken:

          power = work done            P = Wd

                       time taken                    t

P = Wd / t

P = E / t

P = Power (Watts, W)

Wd = Work Done (Joules, J)

E = Energy Transferred (Joules, J)

t = Time (s)