Author Question: The total energy emitted by the brightest nova explosions is about: A) 1,000 Suns. B) 50,000 ... (Read 8 times)

imanialler · **on:** Jul 27, 2018

The total energy emitted by the brightest nova explosions is about:

A) 1,000 Suns.
B) 50,000 Suns.
C) a million Suns.
D) a billion Suns.
E) a trillion Suns.

Question 2

Rotation curves for spiral galaxies show:

A) they are slowing down.
B) rotation speed drops off further from the nucleus.
C) most have dark halos.
D) most of the mass lies in the nucleus.
E) no relation to mass.