What part(s) of a reflecting telescope form the image?
a concave lens
a convex lens
a convex mirror and a concave mirror
a concave mirror and an angled plane mirror

Blank liquids and gases exert a buoyant force on objects placed in them

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in