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Q. Suppose a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this type of planet.

Q. A constant force of 100 n is applied to a mass of 40.0 kg. The force causes a displacement of 20.0 m to this mass along the + x axis. What is the work done by the component of the force along the + x axis?

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