What is your scariest nightmare? Explain

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?

What happens to an isotope during radioactive decay?

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency