Wall
A magnetic field B= 1.3×10-3 T pointing directly into the screen is
used to protect a wall from damage due to incident particles of mass
m = 3×10-27 kg, positive charge q = 1.6×10-19 C, and velocity
v = 2×104 m/s as shown. The width of the region within which the magnetic
field exists is L.
The thickness L of the region with the magnetic field must be larger than
some thickness in order that the charged particles do not strike the wall.
What is the thickness?
L = m
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