Scientists collected data of the speed of sound and speed of light using different materials as media. Use the data tables for sound and light to predict patterns between the density of media, phase of media, and wave speed. Use the box below the table to write your explanation. (20 points!!)

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils