True or false: if the stirling engine increases the entropy of the universe when the cycle is run clockwise, it will decrease the entropy of the universe when it is run counterclockwise as a heat pump.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

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.