Does anyone know the answer to this page and the next one that it has?

Write the correct abbreviation for each metric unit

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?