What is the electric field at a position that is 1.6m east of a point charge of 7.2 x 10^-6c?

The electric field produced by a single point charge is given by:

where
k is the Coulomb's constant
q is the charge
r is the distance from the charge

In our problem, the charge is , while the distance is , therefore the intensity of the electric field at that distance is

and since the charge is positive, the electric field is directed away from the charge (so, eastwards)

The answer is d) by requesting advice on science internet sites

He can play two games. 13/4=3.253.25*2=6.5