At time t1, an electron is sent along the positive direction of an x axis, through both an electric field E and a magnetic field B ,with È directed parallel to the y axis. The figure gives the y component Fnety of the net force on the electron due to the two fields, as a function of the electron's speed v at time t1. The scale of the velocity axis is set by vs = 110 m/s. The x and z components of the net force are zero at tį. Assuming By = 0, find (a) the magnitude of the electric field and (b) B in unit-vector notation. v (m/s) (a) Number i Units (b) i i+ i i k Units (N 61-01) *

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At time t1, an electron is sent along the positive direction of an x axis, through both an electric field È and a magnetic field B ,with
È directed parallel to the y axis. The figure gives the y component Fnety of the net force on the electron due to the two fields, as a
function of the electron's speed v at time t1. The scale of the velocity axis is set by vs = 110 m/s. The x and z components of the net force
are zero at tj. Assuming By = 0, find (a) the magnitude of the electric field and (b) B in unit-vector notation.
1
-2
v (m/s)
(a) Number
i
Units
(b)
i
i+ i
i
k Units
Fnet,y (10-19 N)
Transcribed Image Text:At time t1, an electron is sent along the positive direction of an x axis, through both an electric field È and a magnetic field B ,with È directed parallel to the y axis. The figure gives the y component Fnety of the net force on the electron due to the two fields, as a function of the electron's speed v at time t1. The scale of the velocity axis is set by vs = 110 m/s. The x and z components of the net force are zero at tj. Assuming By = 0, find (a) the magnitude of the electric field and (b) B in unit-vector notation. 1 -2 v (m/s) (a) Number i Units (b) i i+ i i k Units Fnet,y (10-19 N)
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