the distance from the sun to the earth is 1.5 x 10m how long does it take for light from the sun to reach earth

How do we measure or think of speed in the united states?

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?

Which of the following list the divisions of the geologic time scale in order from longest to shortest