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Author Question: A velocity selector uses a fixed electric field of magnitude E and the magnetic field is varied to ... (Read 248 times)

2125004343

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on: Jul 28, 2018
A velocity selector uses a fixed electric field of magnitude E and the magnetic field is varied to select particles of various energies. If a magnetic field of magnitude B is used to select a particle of a certain energy and mass, what magnitude of magnetic field is needed to select a particle of equal mass but twice the energy?
 a. 0.50 B
  b. 1.4 B
  c. 2.0 B
  d. 0.71 B
  e. 1.7 B

Question 2

What value of B should be used in a velocity selector to separate out 2.0-keV protons if E is fixed at 80 kV/m?
 a. 0.18 T
  b. 0.11 T
  c. 0.15 T
  d. 0.13 T
  e. 0.23 T


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alvinum

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

D


2125004343

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Reply 2 on: Jul 28, 2018
Gracias!

sarah_brady415

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Reply 3 on: Yesterday
:D TYSM

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