Describe the particle motion of a longitudinal wave. Which type of
medium (state of matter) do you think would best carry them?

-Solid
-Liquid
-Gas

I out solid and my teacher told me to rethink it so if thats actually the right one can sumone help me explain why its right?Please and thank you!

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Why are graphs useful when interpreting data

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.