There is going to be demand for mechanical engineering skills in the future because O it is the most useful field of engineering.
O housing problems are common in much of the developing world.
O the increasing global population creates many problems to solve.
O very few people have the skills and aptitude to be a mechanical engineer.

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.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

What’s #16 asking and how do i solve it?