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An electron is traveling at a velocity of 500m/s perpendicular to a uniform magnetic field. A force of magnitude 4.32 x10^(-16) N is acting on the electron, what is the magnetic flux density of the field?

F=BQv so B=F/Qv (Q is the charge of an electron, 1.6 x10 -19 C) so B=4.32 x10 -16 / (1.6 x10 -19 x 500) = 5.4 T
CJ
Answered by Christian J. • Physics tutor
2119 Views

Why does the rate of change of potential difference between two capacitor plates decrease as the capacitor discharges?

Current, I , is related to voltage by Ohm's law, I=V/R . As the capacitor discharges, the current will decrease as less charge is "released" from the capacitor. From Ohm's law, we would expect lowe...
FT
Answered by Francis T. • Physics tutor
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What are the three major radiations experienced by heavy unstable nuclei, and how does the penetrating power compare for each?

α - Emission of a Helium nucleus, it has the highest mass and lowest energy of the three types of radiation, it has a +2 overall charge due to its 2 neutron - 2 proton makeup, and can penetrate up to a few s...
RL
Answered by Ryan L. • Physics tutor
2420 Views

What is meant by 'resolving a vector into its components'?

So, let's think of a vector as an 'instruction' - a guide telling us to move in a specific direction for a certain distance. (Draw arbitrary vector A here). This is not the only way to move this distance awa...
JR
Answered by John R. • Physics tutor
3392 Views

By referencing the magnetic field and the alternating potential difference explain how a cyclotron produces a beam of high speed particles.

The difference in potential between the two Ds of a cyclotron accelerate the particles across the gap. The direction of potential difference switches every half cycle to keep the particles accelerating. The ...
GR
Answered by Gareth R. • Physics tutor
5642 Views