You look at the closed beach from a distance and observe that 3 waves hit 2 points
the beach each second. What is the period of the wave? *
O
1/3 Seconds
O 1/3 Hz
O 3 Hz
3 Seconds

What are similarities and differences of reflection, refraction, diffraction and absorption?

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?