APFIVE Force on a Particle in Earth's Magnetic Field
A charged particle with velocity $$\vec{v}$$ enters Earth’s magnetic field at a latitude of 45°N. If the particle moves horizontally eastward, what is the primary direction of the magnetic force it experiences?
A
Downward and slightly northward
B
Upward and slightly northward
C
Directly westward
D
Directly northward
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