Asmall object a, electrically charged, creates an electric field. at a point p located 0.250 m directly north of a, the field has a value of 40.0 n/c directed to the south.
what is the charge of object a?

Charge,

Explanation:

Given that,

Electric field, E = 40 N/C

At a point P located 0.250 m directly north of A, d = 0.25 m

We need to find the charge on the object A. The electric field at a distance of r is given by :

So, the charge on object A is . Hence, this is the required solution.                                                                    

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

your answer is, orbit around the nucleus