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## Question Text#

A cosmic ray proton moving toward Earth at $${{params.v}} \times 10^7 \textrm{ m\s}$$ experiences a magnetic force of $${{params.F}} \times 10^{-16} \textrm{ N}$$. What is the strength of the magnetic field if there is a $${{params.theta}} ^{\circ}$$ angle between it and the velocity of the proton?

### pl-submission-panel#

$$B=$$ $$\textrm{ T}$$