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w History Bookmarks People Window Help Mastering Physics: Hw7 Secure https llsession.masteringphysics.com/myctitem'View?assignmentProblemID 78225516 General Physics II (01) HwT Item 1 Item 1 Part A An electron experiences a magnetic force with a Find the speed of the electron. magnitude of 400x10-15 N when moving at an Use 1.602x10 -19 C for the magnitude of the charge on an electron. angle of 65.0" with respect to a magnetic field with a magnitude of 4.00x10-3 T Submit My Answers up Provide Feedback Ps MacBook Air

Explanation / Answer

The magnetic force on a moving charge is given by:

F = q v B sin(theta)

v = F/q B sin(theta)

v = 4 x 10^-15/(1.6 x 10^-19 x 4 x 10^-3 x sin65) = 6.896 x 10^6 m/s

Hence, v = 6.896 x 10^6 m/s

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