Question

http://session.masteringphysics.com/problemAsset/1071379/4/27.P28.jpg

 

 

 

a. E vector = .... N/C. Give your answer in component form. (Assume that -axis is horizontal and points to the right, and -axis points upward.) Express your answer in terms of the unit vectors i and j. Express your answer using two significant figures.

b. E= ... N/C. (Give your answer as a magnitude and angle measured from the positive x-axis.)

c. Theta= .... CW from the +x axis. (Express your answer using two significant figures.)
I have tried a couple of times but got wrong answers.

 

2. A dipole with a positive charge of 4μC and a negative chargeof -4μC is centered at the origin and oriented along the x axiswith the positive charge located to the right of the origin. Thecharge separation is 0.0010 m. Find the electric field strength atx=4 m, y = 0.0 m. The value of k is 9.0 × 10⁹N∙m²/C².)

a. 0.6 N/C
b. -0.6 N/C
c. 1.1 N/C
d. -1.1 N/C

 

Thanks in advance.