What is the change in potential ΔV in going from a location 3 × 10−10 m from a proton to a location 4 × 10−10 m from the proton? An electron is initially at rest. It is moved from a location 4 ×...

What is the change in potential ΔV in going from a location 3 × 10−10 m from a proton to a location 4 × 10−10 m from the

proton?

An electron is initially at rest. It is moved from a location 4 × 10−10 m from a proton to a location 6 × 10−10 m from the

proton. What is the change in electric potential energy of the system of proton and electron?