Question

Which of the following property of a proton can change while it moves freely in a magnetic field?
$a) \: mass \\ b)speed \\ c)velocity \\ d)momentum$
Please give detailed explanation or else I'll report...
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Answer 1

Explanation:

mass because each and every obect have some apecific mass which helps to move

Answer 2

Answer:

Mass of a proton cannot change. ... When a proton enters a magnetic field, it starts moving in a circular motion. In circular motion, speed is constant but velocity keeps changing