Which of the following would happen when a ray of light travels from one optical medium to another optical medium? (i) Light may be absorbed by the medium. (ii) Light may be returned by the second optical medium (iii) Light may pass through second medium with a change in the angle. *

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

Observations show that interstellar clouds can have almost any shape and