[tex]\sqrt{}[/tex](adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

What is the escape speed (in m/s) of an electron launched from the surface of a 7.42 cm diameter glass sphere that has been charged to 7.04 nC?

2. Relevant equations

u=kqq/r

KE=1/2MV^2

U_{O}=KE

3. The attempt at a solution

here is what i did

kqq/r = 1/2mv^2

solve for v

v=[tex]\sqrt{}2kqq/rm[/tex]

i used q = 7.42 square

and mass of electron = 9.11*10^-31

and r = 0.0704/2

....but still my answer is wrong

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# Homework Help: Escape velocity of an electron

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