- #1
JessicaJ283782
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As an example of the manipulation of an electron beam, consider an electron traveling away from the origin along the x-axis in the xy plane with initial velocity vi= vii. As it passes through the region x = 0 to x = d, the electron experiences acceleration a = axi + ayj, where ax and ay are constants. For the case vi = 1.74 ✕ 10^7 m/s, ax = 7.84 ✕ 10^14 m/s2, and ay = 1.51 ✕ 10^15 m/s2, determine the following, at x = d = 0.0100 m.
(a) the position of the electron (yf=?)So, I went through, and I used the equation d=vi*t+.5(at^2)
I plugged in: .01=1.74*10^7t+.5(7.84*10^14)t^2
I got the time to be 5.67458*10^-10
Now, I know you have to plug the time into an equation, along with the acceleration of y, but I am confused on which equation to use since you only know acceleration and time for the y coordinates?(b) the velocity of the electron
So, I used: vf=vi+at
vf(x)=5.67458*10^-10 X 7.84*10^14
and wouldn't you do the same for the y coordinates?
Thank you!
(a) the position of the electron (yf=?)So, I went through, and I used the equation d=vi*t+.5(at^2)
I plugged in: .01=1.74*10^7t+.5(7.84*10^14)t^2
I got the time to be 5.67458*10^-10
Now, I know you have to plug the time into an equation, along with the acceleration of y, but I am confused on which equation to use since you only know acceleration and time for the y coordinates?(b) the velocity of the electron
So, I used: vf=vi+at
vf(x)=5.67458*10^-10 X 7.84*10^14
and wouldn't you do the same for the y coordinates?
Thank you!