Stuck on Part B, how can the Gauss's Law be applied to solve the problem, it is extremely confusing that there's no electric field inside the earth and so it can't be treated as a point charge.
Stuck on Part B, how can the Gauss's Law be applied to solve the problem, it is extremely confusing that there's no electric field inside the earth and so it can't be treated as a point charge.
How do you apply Gauss’s law for part A? Do the same but this time the “radius of the sphere” is the radius of the Earth plus 100 m.
The equation you should have is (q_a - q_b)/(V_a-V_b) q_a you calculated. q_b can be calculated using the same equation. V_a and V_b can be calculated using the above equation in previous post.