Why is the value of the constant g different on Earth and on the Moon? Explain in detail. At what height above the surface of the Earth is there a 1% difference between the approximate magnitude of...

Why is the value of the constant g different on Earth and on the Moon? Explain in detail.

At what height above the surface of the Earth is there a 1% difference between the approximate magnitude of the gravitational field (9.8 N/kg) and the actual magnitude of the gravitational field at that location? That is, at what height y above the Earth's surface is ?