Refrigerant-134a enters a diffuser steadily as saturated vapor 500 kpa with a velocity of 170 m/s, and it leaves at 600 kpa and 50◦c. the refrigerant is gaining heat at a rate of 2.5 kj/s as it passes through the diffuser. if the exit area is 75 percent greater than the inlet area, determine (a) the exit velocity and (b) the mass flow rate of the refrigerant.

The difference between two numbers is 15. when twice the smaller number is subtracted from three times the larger number, the difference is 58.what is the larger number?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force