A camera employs a lens to form images. a. converging real b. converging virtual c. diverging real d. diverging virtual

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

An object weigh 40n in air ,weigh 20n when submerged in water, and 30n when submerged in a liquid of unknown liquid density. what is the density of unknown of liquid?