Problem 9.015 si the pressure and temperature at the beginning of compression of a cold air-standard diesel cycle are 90 kpa and 300 k, respectively. at the end of the heat addition, the pressure is 7.2 mpa and the temperature is 2250 k. assume constant specific heats evaluated at 300 k. determine: (a) the compression ratio. (b) the cutoff ratio. (c) the percent thermal efficiency of the cycle. (d) the mean effective pressure, in kpa.

The least penetrating form of radiation is

What happens when the vapor pressure of a liquid is equal to the external pressure?

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.