Three kg of Refrigerant 22 undergoes a process for which the pressure–specific volume relation is p20.8 5 constant. The initial state of the refrigerant is 12 bar and 608C, and the final pressure is 8 bar. Kinetic and potential energy effects are negligible. Determine the work, in kJ, for the process.

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.