# physics

A moving proton with a speed of 0.3 m/s experiences a force of 1.5*10^-20N, when it enters at a right angle to the direction of the magnetic field. What is the magnitude of the magnetic field?
a. 0.3 Tesla
b. 0.5 Tesla
c. 0.9 Tesla
d. 1.3 Tesla

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2. 👎 0
3. 👁 745
1. Since B and the velocity are peperdicualar,

Force = q V B

That is a formula you should have learned before posting this question

Use e for the proton charge and solve for B

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2. 👎 0
2. d. 1.3 Tesla

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2. 👎 0

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