Joe has a weight of 731 N (about 161 lb) when he is standing on the surface of the earth. What would his weight (the gravitational force due to the earth) be if he doubled his distance from the center of the earth?

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)