A flying hummingbird picks up charge as it moves through the air. This creates a potential near the bird. What is the "voltage of a hummingbird"? Assume that the bird acquires a charge of+200pC, a typical value, and model the bird as a sphere of radius 3 cm.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?

Photons with the highest energy have the longest period