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Q. Two particles are separated by a certain distance. The force of gravitational interaction between them is Fsub 0. Now the separation between the particles is tripled. Find the new force of gravitational interaction Fsub 1. Express your answer in terms of Fsub 0.

Q. In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 5.0 m/s up a 23.0° inclined track. The combined mass of monkey and sled is 20 kg, and the coefficient of kinetic friction between sled and incline is 0.20. How far up the incline do the monkey and sled move?

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