The following equation, derived from Newton's version of Kepler's third law, allows us to calculate the mass (MMM) of a central object, in solar masses, from an orbiting object's period (ppp) in years and semimajor axis (aaa) in astronomical units: M=a3p2M=a3p2 Using this formula with the values you found in Parts C and D, what is the approximate mass of the central object?

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Energy flows from the producer level to the level. is called