How many times greater is the force of gravity on a 4 kg object lying on the surface of a moon than on a 4 kg object orbiting at a distance of 9 moon radii above the surface?

Irelanda. populationb. square mileagec. average population density per square mile

Zac wanted to determine the measure of r and of ? r in the triangle below. to fine the measure of r, zac sets up the problem.42^2 + 24^2 = r 2. determine whether zac set the problem up correctly.

Where did the solar system come from?