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A velocity selector has a magnetic field of magnitude 0.20 T perpendicular to an electric field of magnitude 0.55 MV/m.
(a) What must the speed of a particle be for it to pass through undeflected?
m/s
(b) What kinetic energy must protons have to pass through undeflected?
kev
(c) What kinetic energy must electrons have to pass through undeflected?
eV

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