3 7. Which one of the following changes to parallel plate capacitor would not increase energy stored
in the capacitor at a fixed voltage across the plates?
A) Increasing the area of the plates. B) Decreasing the charges on the plates.
C) Increasing the dielectric constant D) Increasing the distance between the plates.

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 simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages