Recent content by whoknows12345

force acting on the proton is upwards and that should be force of the magnetic field, and I am not sure what determines whether the protons get through the plates.

i understand that, but when do I actually use my speed given to find the answer?

A beam of protons with various speeds is directed in the positive x direction. The beam enters a region with a uniform magnetic field of magnitude 0.45 T pointing into the page, as indicated in Figure 22-45. It is desired to use a uniform electric field (in addition to the magnetic field) to...

An alpha particle (the nucleus of a helium atom) consists of two protons and two neutrons. A horizontal beam of alpha particles is injected with a speed of 2.0 105 m/s into a region with a vertical magnetic field of magnitude 0.113 T. (a) How long does it take for an alpha particle to move...

nevermind, i got it. i was using the wrong E, E was 3,000,000

so it would be ((8.85 x 10^-12)/1.00059) x (2.2 x 10^-2) which is 1.769e-14?

so it would be 3v/4? and that would give me the answer?

A very large parallel plate capacitor has two plates, each with an area of 9m^2, and a separation of 3nm between them. If the capacitor was then disconnected from the battery (12V), and then a dielectric of k=4 inserted between the plates, fnd the new values for the following (after system...

Suppose that after walking across a carpeted floor you reach for a doorknob, and just before you touch it a spark jumps 0.2 cm between your finger and the doorknob. Find the minimum voltage difference between your finger and the doorknob for this to occur. I did V=Ed which I plugged in...