A two-stage air compressor operates at steady state, compressing 10 m^3/min of air from 1 bar, 300 K, to 10 bar. An intercooler between two stages cools the air to 300 K at constant pressure of 3 bar. The compression processes are isentropic. Calculate the power required to run the compressor, in kW, and compare the results to the power required for isentropic compression from the same inlet state to the same final pressure.
Reconsider question 2 (i) and include in the analysis that each compressor stage has an isentropic efficiency of 85%.
The two stage compressor of question 2(ii) is part of a regenerative gas turbine. The turbine inlet temperature is 1300 K and the turbine has an isentropic efficiency of 87%. The regenerator effectiveness is 80%. Determine,
(a) The thermal efficiency.
(b) The rate of heat addition, in kW.
(c) The net power developed, in kW.

Need asap ! what is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? (2 points) as air pressure in an area increases, the density of the gas particles in that area decreases. as air pressure in an area increases, the density of the gas particles in that area increases. as air pressure in an area increases, the density of the gas particles in that area remains constant. as air pressure in an area increases, the density of the gas particles in that area increases and decreases in an alternating pattern. 3. which of the following correctly describes a way in which earth's atmosphere interacts with the geosphere? (2 points) it contains gases that living organisms breathe. it contains gases that trap incoming solar radiation. it provides a medium for cycles that provide nutrients to living organisms. it provides a medium for water to move between earth's surface and the air. 4. which of the following is considered a drawback to using wind energy as a source of power? (2 points) wind energy is nonrenewable. wind energy produces large amounts of air pollution. 5. a meteorologist predicts that the weather in a region will soon change from clear skies to probable thunderstorms. prior to making this prediction, what did the meteorologist most likely observe on a barometer? (2 points) the barometer fell slightly. the barometer fell substantially. the barometer rose slightly. the barometer rose substantially. 6. which of the following do meteorologists not typically use weather balloons to record? (2 points) atmospheric pressure cloud types humidity temperature 7. during which step in the can crush lab did water vapor force air from the can? (2 points) the can was filled nearly to the top with water. the can was placed on the hot stove top burner for several minutes. the can was removed from the hot stove top burner. the can was placed upside-down in the water-filled pan.

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?