Tisa makes a diagram to organize her notes about charging objects. 2 overlapping circles. The left circle is labeled Friction. The right circle is labeled Conduction. An X is in the overlap.
Which statement should she place in the region marked X?

Electrons move between objects.
The objects do not touch.
The objects develop opposite charges.
The objects have the same charge.

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