Asked by renel
In the figure: an electron is projected along the axis midway between the plates of a cathode-ray tube with an initial velocity of 2 x 107 m/s. The uniform electric field between the plates has an intensity of 20,000 N/C and is upward.
(a) How far below the axis has the electron moved when it reaches the end of the plates? ( 10 points )
(b) At what angle with the axis is it moving as it leaves the plates? (10 points )
© How far below the axis will it strike the fluorescent screen S? (10 points )
2 cm
Vo Screen, S
4 cm 12 cm
(a) How far below the axis has the electron moved when it reaches the end of the plates? ( 10 points )
(b) At what angle with the axis is it moving as it leaves the plates? (10 points )
© How far below the axis will it strike the fluorescent screen S? (10 points )
2 cm
Vo Screen, S
4 cm 12 cm
Answers
Answered by
drwls
How far does the electron travel in the direction along the plates? You need that for the travel time between the plates.
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