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AP Physics 2
12.2 Magnetism and Moving Charges
IntermediateMCQMathematicalProportional AnalysisConceptual17.4k
Ion 1 entering a uniform magnetic field directed into the page.
Ion 1 entering a uniform magnetic field directed into the page.
Two ions, Ion 1 and Ion 2, enter a uniform magnetic field \(\vec{B}\) that is directed into the page. Both ions enter the field at the same location moving horizontally to the right with constant speeds, as summarized in the table.

IonMassChargeSpeed
1\(m_0\)\(+q_0\)\(v_0\)
2\(2m_0\)\(-2q_0\)\(2v_0\)

Ion 1 follows a circular path with orbital radius \(r_0\), has an orbital frequency \(f_0\), and is initially deflected toward the top of the page. Which row correctly identifies the orbital radius, the orbital frequency, and the initial deflection direction of Ion 2?

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