Speed of a proton question - Need Help~

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nukeman
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Homework Statement



Ok here is the question: Image below:

16izd51.png


Now the correct answer is: 1.63 x 10^7 m/s

I am not getting that. Look at the image below to see what I am getting, with my work.

n154r8.jpg


Homework Equations





The Attempt at a Solution

 
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nukeman said:

Homework Statement



Ok here is the question: Image below:

16izd51.png


Now the correct answer is: 1.63 x 10^7 m/s

I am not getting that. Look at the image below to see what I am getting, with my work.

n154r8.jpg


Homework Equations



So will the electron be speeding up or slowing down after it enters the Electric field.

Note: the problem is about an electron, but your title mentions "a proton question"?


The Attempt at a Solution


So will the electron be speeding up or slowing down after it enters the Electric field.

Note: the problem is about an electron, but your title mentions "a proton question"?