- #1

crosbykins

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## Homework Statement

An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 10,000 V. It then passes between two horizontal plates 5.0 cm long and 1.0 cm apart which have a potential difference of 200 V. At what angle θ will the electron be traveling after it passes between the plates?

## Homework Equations

-ΔEE = ΔEK

qΔV = 1/2mv^2

## The Attempt at a Solution

-ΔEE = ΔEK

qΔV = 1/2mv^2

√ (2qΔV)/(9.1*10^-31kg) = v

√ (2(1.6*10^-19 C)(10 000V))/ (9.1*10^-31kg) = v

5.92*10^7 = v

-so i calculated the speed of the electron before passes through the plates. i don't know what to do next.. a step-by-step solution would be appreciated, thanks in advance