earth? 1. The problem statement, all variables and given/known data Mass of moon - 7.3 x 10^22 kg Mass of earth - 6.0 x 10^24 distance between moon and earth - 356400 km change in distance 4 cm 2. Relevant equations 3. The attempt at a solution I just need to check if my answer is correct, I get some thing to the power 28, using the equation GMm/r Is my answer reasonable?