posted by alice .
A proton moves eastward in the plane of
Earth’s magnetic equator so that its distance from the ground remains constant. What is the speed of the proton if Earth’s magnetic ﬁeld points north and has a magnitude of 5.2 × 10−5 T? The acceleration of gravity is 9.81 m/s2 and the charge on a proton is 1.60×10−19.
Answer in units of m/s mass of proton is 1.673 e^-27