The current in a lightning strike is 20 kA and -20 C is transferred from the cloud to the ground, 5 km apart

(1) For what duration does the current flow through any point on the lightning path?

(2)The ancient Greeks noticed that when lightning strikes the ground, nearby cattle are killed, but nearby people often survive. The Greeks thought this indicated an affinity between humans and gods. What would be two more likely explanations of this observation?