Tectonic plates often shift position by the force of liquid rock emerging from below the earth’s surface and then cooling to form hard rock. this most often occurs a-on the ocean floor b-in mountain chains c-along coastlines d-during earthquakes

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.

The force will determine the acceleration.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?