A mass spectrometer is designed to separate protein fragments. Initially the ion

Question

A mass spectrometer is designed to separate protein fragments. Initially the ionized fragments with charge +1.6E-19 C, are at rest. The potential difference between the plates is ?V=2100 V, and the mass of the fragments are 1.67E-26 kg. A)Find the velocity of the fragments when they exit from the hole. B) If the fragments enter a 1.00 T uniform magnetic field, what will be the distance between the points where the ion enters and exits the magnetic field? figure for question http://cs-suse-4.ok.ubc.ca/autoedu/loadFile.jsp?user=bulent&tag;=mass_spec_protein

Explanation / Answer

a) v = sqrt(2qV/m) = 2.006 E5 m/s

b) r = mv/qB0.5578 m

so distance they exist mag field = 2r = 1.11556 m

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