Please help. Brainliest will be given! 25 points. Show all work.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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.

How do you tell if someone actually cares about you? and just say they do?