Three objects, carrying charges of 4.0 x 10^6 C, 6.0 x 10^6 C, and +9.0 x 10^6 C, respectively, are placed in a line, equally spaced from left to right by a distance of 0.50m. Calculate the magnitude and direction of the net force acting on each charge that results from the presence of the other two

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg