Coulomb ( Electric force and charge )

  • Thread starter asz304
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  • #1
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Homework Statement



1. [1pt]
What is the total charge of the radon nucleus? (The neutral radon atom has 86 electrons.)

1.38 * 10^-17 C


2. [1pt]
What is the magnitude of its electric field at a distance of 9.6 x10-10 m from the nucleus?

+1.34 * 10^11 V/m

3. [1pt]
What is the magnitude of the force on an electron at that distance?





Homework Equations



F=qE

q = +/- 1.60 * 10^-19 C

The Attempt at a Solution




F = (- 1.60*10^-19C)(1.34*10^11 V/m )
= 2.10*10^-8 N

I tried to use + and -ve C to get my answer, but the computer told me I got the wrong answer. Is there something that I'm missing?

Thanks
 

Answers and Replies

  • #2
1,137
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even i got same answer
 

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