Problem 20.18 An electron at point A in the figure (Eigure 1) has a speed of 1.4

Question

Problem 20.18 An electron at point A in the figure (Eigure 1) has a speed of 1.49*106 m/s Fiaute 1 t 1.05. 1 --1 Submit My Answers Give Up Incorrect. Try Again: 5 attempts remaining Part D Find the direction of the magnetic feld, that would be needed if the particle were a proton instead of an electron? The magnetic field must go out of the page. Submit M Answers Give Up Correct Part E Find the magnitude of the magnetic feld that would be needed if the panicke were a proton instead of anelectron B 0.29 Submit M Answers ue Incorrect: Try Again: 5 attempts remaining Continue

Explanation / Answer

we know that the magnetic field due to a moving charge in side the magnetic field i

   F = B*q*V sin theta

theta is angle between the magnetic field and the velocity of the charge particle

as given the charge is proton

the direction of the magnetic field is out of the page.

teh force is

   F = Bqv sin theta

   B = F/qv sin 270

   B = - F/qv

   B = - F /(1.6*10^-19*1.49*10^6) T

   B = -F/ 2.384*10^-13

   B = - 4.1946308724832*10^-14*F
     

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