The femur bone in a human leg has a minimum effective cross section of 3.05 cm 2 . How much compressive force can it withstand before breaking? Assume the ultimate strength of the bone to be 1.70 × 10 8 N / m 2 .

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.