lf Ray of light is incident from air at an angle of 40degrees to the surface of water find..1.angle of incidence 2.angle of refraction 3.angle of deviation ​

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.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?