please explain how to find the charge of the sphere Two 1 g of spheres are charged by adding some excess electrons to each sphere. They are then suspended from a rod with two insulating strings. They are observed to hang at equilibrium, which is drawn approximately to scale and use the proportional from 3 cm to find the length of the string. Find the amount of charge on each sphere in coulombs. 3 cm

Protons in an atomic nucleus ale typically 1015 m apart. What is the electric fore of repulsion between nuclear protons?

A water molecule consists of two hydrogen atoms bonded with one oxygen atom. The bond angle between the two hydrogen atoms is 104( (see below). Calculate the net dipole moment of a water molecule that is placed in a uniform, horizontal electric field of magnitude 2.3108N/C . (You are missing some information for solving this problem; you will need to determine what information you need, and look it up.)

An object has a charge of 35 nC. How many excess protons does it have?