A lightning bolt transfers 40 C of charge to Earth through an average potential

Question

A lightning bolt transfers 40 C of charge to Earth through an average potential difference of 50 MV. 1) How much energy is dissipated in the bolt? (Express your answer to two significant figures.) GJ Submit ou currently have O submissions for this question. Only 3 submission are allowed. You can make 3 more submissions for this question. 2) How much water (at a temperature of 100°C) can be turned into steam with this energy? (Express your answer to two significant figures.) x10 kg Submit You currently have O submissions for this question. Only 3 submission are allowed. You can make 3 more submissions for this questi

Explanation / Answer

Given,

Q = 40 C ; V = 50 MV = 50 x 10^6 V

1)energy dissipated will be:

E = q V

E = 40 x 50 x 10^6 = 2 x 10^9 J

Hence, E = 2 x 10^9 J = 2 Giga Joule

2)Q = m c T + m H

2 x 10^9 = m (4186 x 100 + 2260)

m = 2 x 10^9/(420860) = 4752 kg

Hence, m = 4752 kg = 47.52 x 10^2 kg

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