Find the numbers of electron in water in 64gm of water

Two similarly and equal charged metal sphere A and B repel each other 8×10⁻⁵N of force. A third identical uncharged sphere of touched with A then B and removed away. Find the force between A and B now

A particle of charge 2×10⁻⁴ C of charge is placed directly below a 100g of charge of mass 20cm . find the charge in the mass of 100g. what would be your answer if the medium was water (k=80)

ABC is a equilateral trianngle of side 10cm , where three identical charges of 10μC is palced at the three vertices of the triangle. find the force on one of the vertex

Two poin charges 30 μC (left) and -270 μC (right) is placed in air at 80 cm distance. find the point where the net electric field is zero

An electric dipole consists of charges of 1000μC and -1000μC is placed at a distance 2cm is other. find the electric field at the mid point also electric filed ata distance 4cm from both the charges

There is a dipole of charge 100μC and 2cm seperation. Find the electric field at point 5 m axial distance. what would be your answer for equitorial point