Suppose that a system a is placed into thermal contact with a heat reservoir a' which is at an absolute temperature t' and that a absorbs amount of heat q in the process. show that the entropy increases delta s of a in this process satisfies the inequality deltas> =q' t ' , where the equal sign is valid if the initial temperature of a differs infinitesimally from the temperatutre t' of a' . culled from statistical and thermal physics by f. reif question 3.4

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.