A 8-m-long, 510 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66 kg construction worker stands at the far end of the beam. What is the net torque on the beam

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.