Author Question: At the end of the first fifteen minutes, the mass ratio of H/He created was about A) 50/50. B) ... (Read 359 times)

ss2343 · **on:** Jul 27, 2018

At the end of the first fifteen minutes, the mass ratio of H/He created was about

A) 50/50.
B) 75/25.
C) 27/73.
D) 90/10.
E) 1/4.

Question 2

Without telescopes or other aid, we can see the Moon because it

A) emits visible light.
B) emits thermal radiation.
C) reflects infrared light.
D) reflects visible light.
E) glows through radioactive decay.