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field E
=
Suppose we have a kangaroo with charge q and velocity v = v(Î + 1). The kangaroo is immersed in an electric
Ej and magnetic field B = Bĵ. What is the force experienced by the kangaroo (assume that the kangaroo is a point particle)?
○ A.
B.
O C. qEj
○ D. q[Eĵ +vB(îĵ +ĵ³)]
q(Eĵ + vBk)
q(Ej – vBk)

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