Rays of light incident on a lens and parallel to the principal axis of the lens coverage? a. in front of the lens. b. at the focal point of the lens. c. in back of the lens. d. at the center of curvature of the lens.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

grav potential energy