Nitrogen gas at 672k is taken in a thermally insulated vessel. what is the rate v in km/s with which it flows out into vacuum through a small hole. the flow rate of gas inside the vessel is negligible. a) 2km/s b) 3km/s c) 1km/s d) 0.5km/s

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe