Voltage Vaporization: 2.5C Charge, 3.3 MJ Energy, 1.32 MV Potential Diff

[lostfan176]

Homework Statement

A lightning flash transfers 2.5 C of charge and 3.3 MJ of energy to the Earth.

(a) Across what potential difference did it travel? 1.32 MV
(b) How much water could this boil and vaporize, starting from room temperature?

Homework Equations

need help finding equations for b

The Attempt at a Solution

none yet

 

[BishopUser]

Do you know anything about specific heat and heat of vaporization?

 

[lostfan176]

nope
just basic energy and voltage equations

 

[lostfan176]

anyone?