A1.88-mole sample of an ideal gas is contracted at a constant temperature of 298 k. the initial volume is 24.5 l and the amount of work performed on it is 1040 j. what is the final volume? let the ideal-gas constant r = 8.314 j/(mol • k). a. 19.6 l b. 20.2 l c. 22.5 l d. 30.6 l

Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.