A62.0-kg woman runs up a flight of stairs having a rise of 4.28 m in a time of 4.20 s. what average power did she supply? a) 63.2 w b) 619 w c) 596 w d) 629 w e) 609 w

The average power is 619 W.

(B) is correct option

Explanation:

Given that,

Weight = 62.0 kg

Height = 4.28 m

Time t = 4.20 s

We need to calculate the work done

Work done by woman

Where,

m = mass

g = acceleration due to gravity

t = time

Put the value into the formula

We need to calculate the power

Using formula of power

Where,

W = work done

t = time

Put the value in to the formula

Hence, The average power is 619 W.

explanation:

an enlarged virtual image is the answer

conduction, convection, radiation