The position of a box sliding down the slope is given by x - o. s and y-5-9.43.5, where ' r is in seconds. determine the magnitude of box's acceleration after 5 seconds. 9.8 m/s2 10.3 m/s2 12 m/s2 15 m/s2

In order to place a satellite into orbit, it requires enough fuel to supply the necessary mechanical energy. into what types of mechanical energy does the fuel get transformed?

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 of the following is not am example of a polymer? protein nylon kevlar concreta