What is a secondary color of light? a. it is a combination of a primary color with any other color. b. it is a shade of a primary color. c. it is a combination of two primary colors. d. it is any color except red, green, or blue.

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.

What is the role of lenses in microscopy?

Why does karst topography exist in some geographic location? a. few climates have enough oxygen b. most regions have rock layers other than limestone c. in most regions, the soil is too thin d. the water is too acidic enough in most places