Author Question: The magnetic force on a charged particle moving at a constant speed in a uniform magnetic field will ... (Read 100 times)

armygirl · **on:** Jul 28, 2018

The magnetic force on a charged particle moving at a constant speed in a uniform magnetic field will be halved when the angle between the velocity of the particle and the direction of the magnetic field changes from 25.0 to
a. 50.0.
c. 57.7.
b. 12.5.
d. 12.2.

Question 2

How much air must be pushed downward at 60.0 m/s to keep an 800-kg helicopter aloft?
a. 131 kg/s
c. 294 kg/s
b. 196 kg/s
d. 392 kg/s