"coal mines may contaminate groundwater in a location." what does this statement most likely represent? a hypothesis a theory a conclusion an observation

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?

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly