Figure these out and win a prize part 2
 

I'm sick of figuring out these problems so I'm offering a prize if you can figure these out before 5:00 eastern time today. You don't have to answer them all if you can't. Good luck, great prize ;):

1. An electron is accelerated through a potential difference of 1.3 kV and directed into a region between two parallel plates separated by 20 mm with a potential difference of 180 V between them. The electron is moving perpendicular to the electric field when it enters the region between the plates. What magnetic field is necessary perpendicular to both the electron path and the electric field so that the electron travels in a straight line?


2. Physicist S. A. Goudsmit devised a method for measuring accurately the masses of heavy ions by timing their periods of revolution in a known magnetic field. A singly charged ion of iodine makes 14.00 rev in a field of 45.0 mT in 2.58 ms. Calculate its mass, in unified atomic mass units. Actually, the mass measurements are carried out to much greater accuracy than these approximate data suggest


3. In a certain cyclotron a proton moves in a circle of radius 0.30 m. The magnitude of the magnetic field is 1.0 T. The mass of a proton is 1.673e-27 and the cyclotron frequency is 1.52e7 What is the kinetic energy of the proton, in electron-volts?

Re:Figure these out and win a prize part 2
 

dumb ----, just drop out :P

Re:Figure these out and win a prize part 2
 

Try this one : what is the kinetik energy of a warm brick! if you have the answer you get a prize!

Re:Figure these out and win a prize part 2
 

I was more leaning towards killing myself but your idea seems less drastic. :P I guess I shouldn't have skipped class all week and wait till 4:00a.m. to start it. :-\

Re:Figure these out and win a prize part 2
 

send me the prize and you get the anwser. :P

Re:Figure these out and win a prize part 2
 

I already had to take take modern physics / quantum mechanics but after i took it I gave it back. I think my class average was like 50%

Re:Figure these out and win a prize part 2
 

is this chemistry or physics? ???

Re:Figure these out and win a prize part 2
 

1. your talking about like at a drag strip when you pass threw the lights and what not? or you talking about how UFOs fly? or how the trains that are magnetic?

Re:Figure these out and win a prize part 2
 

Physics. quantum mechanics was more chemistry and I made that my bitch 8) This is just simple magnetism.

Re:Figure these out and win a prize part 2
 

lol, im lost too