A Proton Moving with a Velocity of 4

Multiple Choice

A proton moving with a velocity of 4.0 × 10⁴ m/s enters a magnetic field of 0.20 T.If the angle between the velocity of the proton and the direction of the magnetic field is 60°,what is the magnitude of the magnetic force on the proton? (e = 1.60 × 10^-19C)

A) 1.8 × 10^-15 N
B) 0.60 × 10^-15 N
C) 1.1 × 10^-15 N
D) 2.2 × 10^-15 N