Socrates struggled and strained as he lifted an 82.0-kilogram mass vertically a distance of 3.00 meters in 5.0 minutes with a constant velocity. (a). How much work did he do?
(b). What was the average power consumption in watts?

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)