A proton is moving at a speed of 3.2 × 106 m/s at an angle of 80° to a uniform magnetic field of strength 1.5 × 10-4 T

What is the distance moved by the proton along the spiral path as it completes one revolution? (This distance is called the "pitch" of the helix.) A)

1370 m
B)

1390 m
C)

240 m
D)

220 m
E)

cannot be determined


C

Physics & Space Science

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In projectile motion the horizontal component of the velocity at the top of the trajectory is

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A suitcase is sitting on a horizontal conveyor belt, which is moving at speed v. The work done by the frictional force on the suitcase is a. positive

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