What is the electric field at the point x = 3.5 m, y = 2.0 m?

[Bri15]

1. Homework Statement [/b]

The electric potential in a region of space is given by V = axy where a = 1.7 V/m2.

(a) What is the electric field at the point x = 3.5 m, y = 2.0 m? Give your answer in unit
vector notation.

(b) If a particle of mass m = 1.67 × 10 −27 kg and charge q = +1.6 × 10 −19 C is released from
this point, what is the magnitude of its initial acceleration?

Homework Equations

V=axy

The Attempt at a Solution

(a)V=(1.7)(3.5)(2)
11.9
This seems to simple is this correct. Also do not understand unit vector notation.
(b) unsure of the equation to use

 

[rude man]

1. Homework Statement [/b]

The electric potential in a region of space is given by V = axy where a = 1.7 V/m2.

(a) What is the electric field at the point x = 3.5 m, y = 2.0 m? Give your answer in unit
vector notation.

(b) If a particle of mass m = 1.67 × 10 −27 kg and charge q = +1.6 × 10 −19 C is released from
this point, what is the magnitude of its initial acceleration?

Homework Equations

V=axy

The Attempt at a Solution

(a)V=(1.7)(3.5)(2)
11.9
This seems to simple is this correct. Also do not understand unit vector notation.
(b) unsure of the equation to use

(a) What's the formula for the electric field, given the potential?
(b) F = ma