11. ••• A beam of protons exits a particle accelerator due east at a speed of 3.0 × 105 m/s. They then enter a uniform magnetic field of magnitude 0.50 T that is oriented at 37° above the horizontal relative to the beam direction.

(a) What is the initial acceleration of a proton as it enters the field?

(b) What if the magnetic field were angled at 37° below the horizontal instead?

(c) If the beam were instead electrons at the same speed and the field were angled upward at 37°, would there be any difference in the force on the electrons compared to protons? Explain.

(d) In part (c), what would be the ratio of the acceleration of an electron to that of a proton?