Two boxes of masses M1 and M2 are placed next to each other, in contact, on a floor with a smooth, horizontal surface. Box M1 is on the left of Box M2. A constant horizontal force, F, pushes box M1 to the right. What is the acceleration of the two boxes? 1: a=F/(m1+m2)
2: a=F/m2
3: a=F(m1-m2)
4: a=F/(m1 times m2)
5: a=F/m1

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Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.