1. Our Moon were one-tenth of its actual distance from Earth? What would be different about Earth and life on it? Hint: The heights of tides vary as 1/r 3 , where r is the distance between the centers...

1. Our Moon were one-tenth of its actual distance from Earth? What would be different about Earth and life on it? Hint: The heights of tides vary as 1/r³, where r is the distance between the centers of Earth and the Moon.

2. The Moon, located where it actually is, were as massive as Earth? What would be different about Earth and life on it and about the Moon?