Answer
A compound is made of atoms of more than one or two different elements. Sorry, I really don't have an explanation as I'm not a scientist. Sorry.
Sum of the individual forces
Answer:
The radius r of the metal sphere
Explanation:
Electric field, where Q is the magnitude of the charge, R is the distance from the center of the metal sphere. Whenever the sign of the charge changes, the direction of electric field also changes. Therefore, it's only the the radius r of the metal sphere does not affect the electric field at a distance R from the center of the metal sphere when R>r
Explanation:
Given that,
(a) Work done by the electric field is 12 J on a 0.0001 C of charge. The electric potential is defined as the work done per unit charged particles. It is given by :
(b) Similarly, same electric field does 24 J of work on a 0.0002-C charge. The electric potential difference is given by :
Therefore, this is the required solution.