A) An electron is moving with a speed of 3.5 x10 5 m/s when it encounters a magn

Question

A)  An electron is moving with a speed of 3.5 x105 m/s when it encounters a magnetic field of 0.60T. The direction of the magnetic field makes an angle of60.0° with respect to the velocity of the electron. Whatis the magnitude of the magnetic force on the electron? B) Each second, 1.25 x 1019 electrons ina narrow beam pass through a small hole in a wall. The beam isperpendicular to the wall. Using Ampere’s law, determinethe magnitude of the magnetic field in the wall at a radius of0.750 m from the center of the beam. I know the answer to A is 2.9 x 10^-14 N and the answer to Bis 5.33 x 10^-7 T. Can anyone show me the steps? Ithink I've tried everything!! I will rate immediately!!!! A)  An electron is moving with a speed of 3.5 x105 m/s when it encounters a magnetic field of 0.60T. The direction of the magnetic field makes an angle of60.0° with respect to the velocity of the electron. Whatis the magnitude of the magnetic force on the electron? B) Each second, 1.25 x 1019 electrons ina narrow beam pass through a small hole in a wall. The beam isperpendicular to the wall. Using Ampere’s law, determinethe magnitude of the magnetic field in the wall at a radius of0.750 m from the center of the beam. I know the answer to A is 2.9 x 10^-14 N and the answer to Bis 5.33 x 10^-7 T. Can anyone show me the steps? Ithink I've tried everything!! I will rate immediately!!!! I know the answer to A is 2.9 x 10^-14 N and the answer to Bis 5.33 x 10^-7 T. Can anyone show me the steps? Ithink I've tried everything!! I will rate immediately!!!!

Explanation / Answer

a)
we have speed of electron v = 3.5*105 m/s magnetic field B = 0.60T The direction of the magnetic field makes an angle of = 60.0° with respect to the velocity of the electron. charge of electron q = 1.6*10-19C the magnitude of the magnetic force on the electron is        F = Bqvsin            =(0.60T)(1.6*10-19C)(3.5*105m/s)sin60.0°            = 2.90*10-14 N Note: submit one question per onepost.

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