What is the frequency for a beam of electrons orbiting in a field of 4.62 x 10^-3 T? Let the mass of an electrons m = 9.31 x 10^-31 kg, and the charge on an electron q = -1.60 x 10^-19 C.
A. 129 MHz
B. 439 MHz
C. 223 MHz
D. 811 MHz

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

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?