If one of the samples was measured using a test tube with a significant amount of dirt or smudges on the outside of the test tube, how would this affect the measured transmittance

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.

Why do astronauts in the space shuttle weigh less?

Both independent and dependent clauses