Electron problem

  • Thread starter mustang
  • Start date
  • #1
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Problem 14.
An electron moving through an electric field experiences an acceleration of 6 : 00 * 10^3 m/s^2.
Find the magnitude of the electric force acting on the electron. In units of N.
Note: I used force=mass* acceleration with mass=9.109*10^-19 and the acceleration =6 : 00 * 10^3 m/s^2 and got 5.4654*10^-27 N but it was wrong, what did I do wrong?




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Answers and Replies

  • #2
ShawnD
Science Advisor
668
1
[tex]F = ma[/tex]

[tex]F = (9.11x10^-^3^1)(6x10^3)[/tex]

[tex]F = 5.466x10^-^2^7[/tex] N

Where did you get that mass from? What does 6:00 mean? If you used that mass you gave, how did you get that answer?
 
Last edited:
  • #3
169
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Answer

this is how it was solved:
F_electric=m_e*a
=(9.109*10^-31)(6.9832*10^6)
=6.361*10^-24N.
 
  • #4
ShawnD
Science Advisor
668
1
Where the heck does 6.9832x10^6 come from???
 
  • #5
1,036
1
Mustang:

Your answer is correct if the acceleration is 6 x 10^3.

The other answer is correct if the acceleration is 6.9832 x 10^6.

Pick one.

(I assume your 9.109x10^-19 was just a typo.)
 
Last edited:

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