If the total mechanical energy of a swinging pendulum is 75 J, and its mass is 5.0 kg, what is the maximum height reached?
Use g = 10 m/s2

Explain why electric current cannot exist if a current doesn't have a voltage source.

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.

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)