Image contrast is not likely to be affected by what

What are chlorofluorocarbons and what impact do they have on the atmosphere?

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Most short-period comets do not have randomly oriented orbits because