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PHY102 (2024)
Question 9 of 50
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Magnetism & Induction
PAST QUESTION
A proton enters a uniform magnetic field of 1.0×10⁻⁴ T with a speed of 5.0×10⁵ m/s. At what angle must the magnetic field be from the velocity so that the pitch of the resulting helical motion is equal to the radius of the helix?
A
80°
B
81°
C
51°
D
81.5°
E
71°
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