Question

1. A mass spectrometer is shown below. The magnetic field is denoted by x’s, and there
is an electric field only in the lower region (indicated by arrows). The electric and
magnetic fields are perpendicular to one another. The magnitude of the magnetic field is
0.0350 tesla and the electric field magnitude is 2500 V/m. The particle is a singly charge
ion with mass m = 2.18x10
-26
kg.
(a) Determine the speed of the particle that is required so that it follows a straight-line
path in the region with both fields, as shown in the figure.