Calculate the electric potential energy in a capacitor that stores 1.0 x 10-10 C of charge at 100.0 V. Use PE. = "QAV.
2
A. 5.0 x 101
B. 100 x 10-8j
C. 1.0 102 J
D. 5.0 x 109 J

The eel has a certain amount of rotational kinetic energy when spinning at 14 spins per second. if it swam in a straight line instead, about how fast would the eel have to swim to have the same amount of kinetic energy as when it is spinning?

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

How is the ideal mechanical advantage of a wheel and axle calculated?