Author Question: Which statement about accretion disks is not true? A) The gas in the inner parts of the disk ... (Read 41 times)

penza · **on:** Jul 27, 2018

Which statement about accretion disks is not true?

A) The gas in the inner parts of the disk travels faster than the gas in the outer parts of the disk.
B) The gas in the inner parts of the disk is hotter than the gas in the outer parts of the disk.
C) The primary factor determining whether a white dwarf has an accretion disk is the white dwarf's mass.
D) Accretion disks are made primarily of hydrogen and helium gas.

Question 2

The overall result of the proton-proton chain is

A) 6 H becomes 1 He + energy.
B) p + p becomes 2H + energy.
C) 4 H becomes 1 He + energy.
D) Individual protons are joined into long chains of protons.