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 3 years ago
A proton of mass 1.67x10^27 kg, moves in a circle in the plane perpendicular to a uniform magnetic field of magnitude 1.8T. The radius of curvature is 3.0cm. what is the speed of the proton?
 3 years ago
A proton of mass 1.67x10^27 kg, moves in a circle in the plane perpendicular to a uniform magnetic field of magnitude 1.8T. The radius of curvature is 3.0cm. what is the speed of the proton?

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NotTim
 3 years ago
Best ResponseYou've already chosen the best response.0To speed things up, the equation is \[v=qBr/m\]

NotTim
 3 years ago
Best ResponseYou've already chosen the best response.0My only difficulty with this situation is the matter of "q". I don't know where the value comes from.

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.0q looks like the charge (in Coulombs perhaps?) of the proton, but i'm not entirely sure

NotTim
 3 years ago
Best ResponseYou've already chosen the best response.0I think you are correct. Q is the charge.

NotTim
 3 years ago
Best ResponseYou've already chosen the best response.0IF anyone ever comes: value of q still undetermined.

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.0If q is the charge, then in coulombs, the charge of a proton is q = 1.602 * 10^(19) C where C is the abbreviation of a coulomb

JamesJ
 3 years ago
Best ResponseYou've already chosen the best response.2Yes, that's the charge of a proton. You can solve it now. Just make sure you use SI units throughout.

NotTim
 3 years ago
Best ResponseYou've already chosen the best response.0wait, so Q is a constant?

JamesJ
 3 years ago
Best ResponseYou've already chosen the best response.2q is the charge of object you're interested in, which is a proton. And a proton most definitely has a fixed charge.

NotTim
 3 years ago
Best ResponseYou've already chosen the best response.0So this is knowledge I should have know already?

JamesJ
 3 years ago
Best ResponseYou've already chosen the best response.2it doesn't seem like an unreasonable thing that you should.

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.0yeah it seems like they were assuming that you would have or should have known that

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.0but if you didn't, you can easily look it up

NotTim
 3 years ago
Best ResponseYou've already chosen the best response.0Ok. Thank you very much.
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