Question

Using Newton's version of Kepler's 3rd law, what do we need to know to determine the mass of the Sun?

Group of answer choices

The Earth’s mass and circumference.

The size of the A.U. and exact length of the year.

Its density as found by spectroscopy.

Its temperature as found by Wien’s Law.

The exact timings of the transits of Venus and its diameter.

Answer 1

b) we need to find the The size of the A.U. and exact length of the year.

As

2. to 0 4T de 2 GM Ts Time period Me distance b/w them, + mass of central object.