Apiston-cylinder holds air at an initial pressure of p1=100 kpa and temper ature of t=2c the piston-cylinder (which holds the air at constant pressure) is heated until its volume doubles from an initial volume of v1 1000 cm3 to a final volume of to v2 2000 cm2 (for air: r 0.2870 kj/kg/k, cp-1.005 k/kgk, c,-0.718 k/kg/k) a)- find the heat transferred to the water (kj) b)- find the work done by the piston-cylinder (kj).

Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k

Two microscope slides are placed horizontally, one on top of the other, with a drop of a dishwashing liquid between them. the gap between the slides is 1 mm. a machine pulls the top slide to the right with a velocity of 0.15 millimeters per second while the bottom slide is held stationary. a stress gage indicates that a shearing stress of 0.5 pa is required to pull the top slide with this velocity. if the dishwashing liquid adheres to both slides during this process, what is the viscosity of the liquid? specify whether your answer is dynamic or kinematic viscosity, and use appropriate units.

Asharp-edged orifice is placed in a 10-in-diameter pipe carrying ammonia. if the volume flow rate is 25 gal/min, calculate the deflection of a water manometer (a) if the orifice diameter is 1.0 in and (b) if the orifice diameter is 7.0 in. the ammonia has a specific gravity of 0.83 and a dynamic viscosity of 2.5 x 10-6 lb s/t2