An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is...
An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is 2.0 * 10^5 m/s and its direction of motion makes an angle of 25 degrees with the x axis. What are the components of the momentum of the electron?
Homework Answers
momnetum in the x direction = m*vx
=mv cos(25)
=9.1*10^-31*2*10^-5*cos(25)
=9.1*10^-31*2*10^-5*0.906
=1.65*10^-35 Ns
momenutm in the y direciton = mvy
=mvsin(25)
=9.1*10^-31*2*10^-5*0.422
=7.68*10^-36 Ns
mv cos (25 ) along x = 16.49 * 10^-26 along x
mv sin(25) along y = 7.691 *10^-26
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