Apower cycle operates between a lake’s surface water at a temperature of 300 k and water at a depth whose temperature is 285 k. at steady state the cycle develops a power output of 10 kw, while rejecting energy by heat transfer to the lower-temperature water at the rate 14,400 kj/min. determine (a) the thermal efficiency of the power cycle and (b) the maximum thermal efficiency for any such power cycle

An air-standard stirling cycle operates with a maximum pressure of 600 psia and a minimum pressure of 10 psia. the maximum volume of the air is 10 times the minimum volume. the temperature during the heat rejection process is 100°f. calculate the specific heat added to and rejected by this cycle, as well as the net specific work produced by the cycle. use constant specific heats at room temperature. the properties of air at room temperature are r

Convection currents are caused by differences in what two things?

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?