Contrary to what you might expert, a solid steel ball can float on water due to the surface tension effect. determine the maximum diameter of a steel hall that would float on water at 20 degree c. what would your answer be for an aluminum ball? take the densities of steel and aluminum to be 7800 kg/m3, and 2700 kg/m3, respectively.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

What precautions should you take to prevent injuries when dealing with heavy loads?

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.