# Electron problem

1. Dec 20, 2003

### mustang

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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2. Dec 20, 2003

### ShawnD

$$F = ma$$

$$F = (9.11x10^-^3^1)(6x10^3)$$

$$F = 5.466x10^-^2^7$$ 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: Dec 21, 2003
3. Dec 21, 2003

### mustang

this is how it was solved:
F_electric=m_e*a
=(9.109*10^-31)(6.9832*10^6)
=6.361*10^-24N.

4. Dec 21, 2003

### ShawnD

Where the heck does 6.9832x10^6 come from???

5. Dec 21, 2003

### gnome

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: Dec 21, 2003