Ibroke my knee on valentine’s day doesn’t that suck

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.

What is the momentum of a 2 kg object moving at 15 meters per second

How do you tell if someone actually cares about you? and just say they do?