Which of the following properties of a proton can change while it moves freely i

Question

Which of the following properties of a proton can change while it moves freely in a uniform magnetic field vector B (There may be more than one correct answer.) Mass Speed Velocity Momentum Kinetic energy Which of the following properties of a proton can change while it moves freely in a nonuniform magnetic field vector B (There may be more than one correct answer.) Mass Speed Velocity Momentum Kinetic energy Can a static magnetic field do positive work on a charged particle Yes Yes, but only if the particle has a positive charge Yes, but only if the particle has an initial velocity No

Explanation / Answer

F = Bqv sin theta

velocity and mass of proton change when it enters a magnetic field. When a proton enters a magnetic field it starts moving on a circular path. Because of its movement along a circular path it attains angular momentum. We know that momentum is a product of mass and velocity.

velocity and momentim changes

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