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cwesto
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Homework Statement
An electron with an initial speed of 4.70×105m/s is brought to rest by an electric field.
What was the potential difference that stopped the electron?
Unknown:
potential difference or [tex]\Delta[/tex]V
Known:
vo=initial speed
m=mass of electron
q=charge of electron
Homework Equations
[tex]\Delta[/tex]Vq+[tex]\frac{1}{2}[/tex]*mv2=[tex]\Delta[/tex]Vq
The Attempt at a Solution
I figure basically plug and chug but my equation doesn't seem right. I sure it's not. Basically I don't know where to go from here.
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