Calculate the normal force of an 8 kg object pushing up from the table

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.

If the new moon happens on january 15th, what shape will it be on february 6th?

What happens when a rubber rod is rubbed with a piece of fur?