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Electrons go through a slit 50nm wide and strike a screen 24.0cm away.

Electrons go through a slit 50nm wide and strike a screen 24.0cm away. You find that at angles of +- 20 degrees from the center of the diffreaction pattern, no electrons hit the screen but electrons hit at all points closer to center. How fast were these electrons moving when they went through the slit?


a. 4.25 x 104 m/s
b. 6.31 x 104 m/s
c. 2.13 x 104 m/s
d. 7.52 x 104 m/s
e. 1.42 x 104 m/s
f. 9.03 x 104 m/s
g. 1.06 x 104 m/s
h. 5.07 x 104 m/s

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