How Does Charge Distribution Affect Electric Field and Potential at Point P?

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Homework Statement

Two charges of opposite sign and equal magnitude Q = 0.82 C are held 2.0 m apart as shown in the figure.

Picture: http://gyazo.com/a78a049ce0a24ad464fd7bb99dffd665

A) Determine the magnitude of the electric field at the point P.
B) Determine the electric potential at the point P.
C) How much work is required to move a 1.0 C charge from infinity to the point P?

Homework Equations

EPE=kq/r

The Attempt at a Solution

I am really stuck...I have no clue where to start

 

[majormaaz]

Homework Statement

Two charges of opposite sign and equal magnitude Q = 0.82 C are held 2.0 m apart as shown in the figure.

Picture: http://gyazo.com/a78a049ce0a24ad464fd7bb99dffd665

A) Determine the magnitude of the electric field at the point P.
B) Determine the electric potential at the point P.
C) How much work is required to move a 1.0 C charge from infinity to the point P?

Homework Equations

EPE=kq/r

The Attempt at a Solution

I am really stuck...I have no clue where to start

Hey there!
You have 3 problems, but only one equation - you're going to need the equation for electric field, and electric potential.

I'm just going to give you a pointer for now - electric field is a vector quantity, so you'd be best off if you tried to break the electric field of each charge into its respective x and y components. Potential and Potential Energy are scalar quantities, so direction doesn't matter - the distance between the charge and the point does.