crazy physics question.. tough one

[synapse]

hey guys. can u figure this out? i don't get it..

A charge Q = -10-6 C is moving at a speed of 10,000 m/s through a magnetic field. If the field B = 3 Tesla, what is the largest possible magnetic force on the charge?

F = ?

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[firebird69guy]

hey guys. can u figure this out? i don't get it..

A charge Q = -10-6 C is moving at a speed of 10,000 m/s through a magnetic field. If the field B = 3 Tesla, what is the largest possible magnetic force on the charge?

F = ?

F = QvBsin(theta)


so... 10 x 10,000 x 3 x sin 90

= 3 x 10^5 N

That's my guess.

 

[Parscope]

hey guys. can u figure this out? i don't get it..

A charge Q = -10-6 C is moving at a speed of 10,000 m/s through a magnetic field. If the field B = 3 Tesla, what is the largest possible magnetic force on the charge?

F = ?

F = qvBsin(@)

In order to get the largest possible force, the charge would have to be moving perpendicular to the B field, so F = qvB.

F = (.000001 C)(10,000 m/s)(3 T) = .03 Newton

 

[Shrike]

Par is right, unless I'm missing something; firebird, you misread the problem (which was easy to do): it was 10^(-6) coulombs. Remember, a Coulomb is a lot of charge.

The charge was given as negative, so either use left hand rule or switch the RHR answer once your done, whichever you promise to remember unfailingly.

 

[Daichi Katase]

hmmmmmm.....it does say coulomb unless sleep deprivation is catching upto me.

 

[Turkeyman]

hmmmmmm.....it does say coulomb unless sleep deprivation is catching upto me.

Yeah that's what Shrike said, 10^-6 coulombs =D

 

[Daichi Katase]

Oh