An object is on the optical axis of a spherical mirror, 65 mm away from the center of the mirror. The magnification produced by the mirror is −0.67.Find the focal length of the mirror to the nearest millimeter.

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Energy is the ability to do work which measures what

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and