Im desperate so I made this 25 points!! Please help! A bat chasing a moth emits a sequence of three chirps every 0.010 seconds and
later hears the echos of the chirps as detailed in the diagram shown.

Question: How far away is the moth when the bat hears the third echo?
Make sure to explain how you arrived at your answer.

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

The material that keeps its new shape after it is stretched is called?

Need only answer if you think you know it