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sharris203
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Homework Statement
An electron moves through a uniform magnetic field given by B = Bxi+(3.0Bx)j. At a particular instant, the electron has velocity v = (2.0i+4.0j)m/s and the magnetic force acting on it is (6.4x10-19N)k. Find Bx.
Homework Equations
Fb=|q|v x B
The Attempt at a Solution
B = Bxi + (3Bx)j + 0zk
v = 2xi + 4yj + 0zk
Fb = 0xi + 0yj + (6.4 * 10^[-19]N)k
I'm sure I need a matrix. But i can't figure it out, help!