PLEASE HELP, this is a physics question, I had gotten 19.90 but I am not sure and think it is completely wrong. ;-;

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

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2