What is the change in entropy of the ammonia vaporized per second in the 10-mw power plant, assuming an ideal carnot efficiency of 6.5%? (a) +6 x 10⁶ j/k per second; (b) +5 x 10⁵ j/k per second; (c) +1 x 10⁵ j/k per second; (d) 0.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.