What thickness of concrete, with a thermal conductivity of 1.1 W/(m K) will conduct heat at the same rate as 0.25 m of air, which has a thermal conductivity of 0.0256 W/(m K), if all other conditions are the same?

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points