Question: The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. These protons are incident on the Earth's atmosphere from all directions at a rate of 1245.0 protons per square meter per second.
Part A: Assuming that the depth of Earth's atmosphere is 120 km, what is the total charge incident on the atmosphere in 8.5 min?
I need tutor help to solve the above question and assume that the radius of the surface of the Earth is 6378 km.