Suppose you have a barometer with mercury and a barometer with water. How does the height of water (hwater) compare with the height of mercury (hmercury) in each of these barometers when they are placed side-by-side under the same atmospheric conditions?

An uncharged nonconductive hollow sphere of radius 18.0 cm surrounds a 12.0 µc charge located at the origin of a cartesian coordinate system. a drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. calculate the electric flux through the hole.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a. true or b. false

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.