Hi please, I Have An attachment on Waves, Just two Objective Questions Whoever Answers Will be Marked Brainliest thank you.

Hi please I Have An attachment on Waves Just two Objective Questions Whoever Answers Will be Marked Brainliest thank you class=

Respuesta :

Answer:

The first answer is W and Z, since they appear to be a period apart. Dont know the second question. I did what I could, hope someone can answer the second.