Asmall plastic sphere with a charge of -6.0 nc is near another small plastic sphere with a charge of -14 nc . if the spheres repel one another with a force of magnitude 8.3×10−4 n , what is the distance between the spheres?

What is the fate of the electrons that interact with a specimen in an electron microscope?

Which is an example of an exothermic process?

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