Suppose that the moon orbits around the earth in a circle of radius r = 3.84 X 108 m, determine the period (that is the time it takes for the moon to go around the earth one time).

What is the role of the ocular lens?

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

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine