A system executes a power cycle while receiving Q_H by heat transfer at a fixed temperature of T_H and discharging Q_C by heat transfer at a fixed temperature of T_C. There are no other heat transfer processes in the cycle. a. The thermal efficiency of a power cycle can be evaluated as:
b. For this power cycle, the Clausius Inequality reduces to:
c. If σcycle is has a negative value, the cycle is:

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Acircular ring of charge with radius b has total charge q uniformly distributed around it. what is the magnitude of the electric field at the center of the ring? 0 keq/b2 keq2/b2 keq2/b none of these answers

Which of the following could represent a single-replacement reaction? a. element + compound = element + compound b. element + element = compound c. compound +compound = compound + compound d. compound = element + element