The function of a capacitor in an electric circuit is to
a. allow current flow between its plates.
b. store electric charges.
c. increase circuit power.
d. measure the amount of current in the circuit.

Gam radio signals can usually be heard behind a hill, but fm often cannot. that is, am signals bend more than fm. explain. (radio signals, as we shall see, are carried by electromagnetic waves whose wavelength for am is typically 200 to 600 m and for fm about 3 m.)

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?