A garbage can that has height h and a square top and bottom of lengths a and b (respectively) is filled to the top with water. Ignoring the mass of the garbage can itself and assuming the water has constant density, determine a formula for the distance from the bottom of the garbage can to the center of mass of the water in terms of a, b, and h.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.