Which of the following units would be the most appropriate for measuring the thickness of a piece of paper? a. centimeters b. millimeters c. kilometers d. meters

Compare and contrast refraction of light and sound will give brainliest

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?