Use the exact values you enter in previous answer(s) to make later calculation(s

Question

Use the exact values you enter in previous answer(s) to make later calculation(s). Consider a lightbulb rated for a power Pbulb = 60 W. This lightbulb consumes a certain amount of electrical energy in three days of use. Find the height h through which the lightbulb would have to fall for the change in gravitational potential energy to equal the electrical energy consumed by the lightbulb. (The mass of the lightbulb is m = 0.150 kg. ) h = m Compare this answer to the height of Mount Everest. Assume you can use the relation PEgrav = mgh. (The height of Mount Everest is 8.85 103 m.) h hEverest =

Explanation / Answer

here,

Pbulb = 60 W

time = 3 days = 3 * 24*3600 = 259200 s

m = 0.15 kg

energy consumed by light bulb = PE of the bulb

P*t = m * g * h

60 * 259200 = 0.15 * 9.8 * h

h = 1.06 * 10^7 m

the height h of the light bulb is 1.06 * 10^7 m

h/heverest = 1.06 * 10^7 /8850

H/heverest = 1195

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