Steam, initially at 700 lbf/in.2, 550°f undergoes a polytropic process in a piston-cylinder assembly to a final pressure of 3600 lbf/in. kinetic and potential energy effects are negligible. determine the heat transfer, in btu per lb of steam, for a polytropic exponent of 1.3, (a) using data from the steam tables. (b) assuming ideal gas behavior.

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

Asher cycles 12 miles in 16 hours. what is his speed?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?