Aspeeding motorist traveling with velocity vm is spotted by a police car. the police car is initially at rest, but the instant the motorist passes, accelerates with constant acceleration ap. assume the police car maintains this acceleration and the motorist maintains velocity vm. find: a. the velocity of the police car when it catches up to the motorist. b. the time it takes for the police car to catch the motorist. c. how far does the police car travel to catch the motorist?

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

Which type of basaltic lava flow has a fairly smooth

In science and physics what is the standard unit of measure for speed?