According to the ideal gas law, decreasing the volume of a closed reaction container increases the thermal energy because the. a) pressure and collision frequency increase. b) collision frequency decreases. c) temperature remains the same. d) r is multiplied.

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

How is the gravitational force related to the distance between two objects?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?