Find the direction and magnitude of an electric field

[jmemo]

Homework Statement

Find the direction and magnitude of an electric field that exerts a 4.65 ✕ 10−17 N westward force on an electron. (Enter the magnitude in N/C.)

Relevant Equations

e=f/q or E=kq/r^2

Find the direction and magnitude of an electric field that exerts a 4.65 ✕ 10−17 N westward force on an electron. (Enter the magnitude in N/C.)

 

[Greg Bernhardt]

Please show what you've tried so far. You must show an attempt. Relevant equations must be in your textbook or class notes. Please provide, thanks!

 

[jmemo]

e=f/q or E=kq/r^2

 

[jmemo]

4.65e-17/8.99e9

 

[jmemo]

don'know if this how to do it

 

[kuruman]

e=f/q or E=kq/r^2

The first equation is the one you should be using. Can you explain what the symbols e, f and q stand for and what their numerical values are if given or known?

 

[jmemo]

e= electric field 4.65e-17, q =test charge, and f coulomb force 8.99e9

 

[kuruman]

... f coulomb force 8.99e9

Where did you see this written down?
Check your textbook or see here for Coulomb's Law. You are confusing the Coulomb force with the Coulomb constant. They are not the same. Besides, where do you think the $4.65\times 10^{-17}~\mbox{N}$ fits in all this? What does it represent?