Question

9 sirius b is in what region of the hertzsprung - russell diagram? cool, bright hot, bright hot, dim cool, dim skip 8/10 complete

Explanation:

Sirius B is a white - dwarf star. White - dwarfs are hot (high surface temperature) but dim (low luminosity) as they have a small surface area from which to radiate energy. In the Hertzsprung - Russell diagram, such stars are in the hot, dim region.

Answer:

Hot, dim