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

A particle (mass 6.7 × 10–27 kg, charge 3.2 × 10–19 μC) moves along the positive x axis with

a speed of 4.8 × 105 m/s. It enters a region of uniform electric field parallel to its motion

and comes to rest after moving 2.0 m into the field. What is the magnitude of the electric

field?

a) 2.5 KN/C

b) 1.5 KN/C

c) 1.2 KN/C

d) 3.5 KN/C

e) 2.4 KN/C

2. Relevant equations

(delta)E.E = -q * (E.d)

3. The attempt at a solution

(1/2*(6.7*10^-27)*(4.8*10^5)^2)/( (3.2*10^-19) * 10^-6) *2)

The problem is that when I convert the charge from uc to c I get the answer but multiplied by a number like million and when I divide it by 1000 to get KN still the number remains multiplied by a factor of 1/10. On the other hand, if I leave the charge in uc I get the answer when I divide by 1000 as I should. I feel that I messed a step in the middle or there is a mistake in the question

Thanks in advance

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# Electric Potential slowing a charged particle to a stop

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