A beam of protons moves in a circle of radius 0.20 m. The protons move perpendicular to a 0.36-T magnetic field. (a) What is the speed of each proton? (b) Determine the magnitude of the centripetal force that acts on each proton.

a) is the speed of each proton

b)

Explanation:

Given:

radius of path of motion,

we know charge on protons,

magnetic field strength,

we've mass of proton,

a)

From the equivalence of magnetic force and the centripetal force on the proton:

where:

v = speed of the proton

is the speed of each proton

b)

Now the centripetal force on each proton:

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