Using the data from Problems 67 and 68, find the approximate separation between two equi...

Using the data from Problems 67 and 68, find the approximate separation between two equipotential surfaces with near the Earth’s surface. Compare this distance to your height.

(reference problem 68)

Use the data from Problem 67 to estimate the approximate electric field near the Earth’s surface.

(reference problem 67)

Experiments have shown that in good weather the Earth has, on average, a negative charge of approximately on every square centimeter of surface area. What is the approximate total excess charge on the entire Earth? How many electrons does that correspond to? For simplicity, assume that charge is spread evenly over the entire surface of the Earth, including the oceans.