A proton with a velocity of 2.0 x 10^7 m/s in the horizontal (+x) direction enters a region of uniform magnetic field that is 1 meter wide and points out of the page with a magnitude of 0.05 Tesla.

Question

At what angle below the x-axis, in degrees, does the proton's trajectory emerge from the magnetic field? Hint: find it with geometry, not kinematics! Also, ignore relativistic effects.
What is the magnitude of the y-component of the protons's velocity when it leaves the magnetic field?

Answer 1

A proton with a velocity of 2.0 x 10^7 m/s in the horizontal (+x) direction enters a region of uniform magnetic field that is 1 meter wide and points out of the page with a magnitude of 0.05 Tesla.
At what angle below the x-axis, in degrees, does the proton's trajectory emerge from the magnetic field? Hint: find it with geometry, not kinematics! Also, ignore relativistic effects.
What is the magnitude of the y-component of the protons's velocity when it leaves the magnetic field

Answer 2

13.86°
4.79 *10^6 m/s