Author Question: Galaxies may contain a supermassive black hole at their center but ___________ an active nucleus ... (Read 86 times)

Deast7027 · **on:** Jul 27, 2018

Galaxies may contain a supermassive black hole at their center but ___________ an active nucleus because of ____________ into the black hole

a. show; mass inflow
b. not show; mass inflow
c. show; lack of mass inflow

Question 2

The triple-alpha process

a. controls the pulsations in Cepheid variable stars.
b. is the nuclear fusion of hydrogen to helium in massive stars.
c. is the process that produces the neutrinos we receive from the Sun.
d. requires a temperature of about 5,000,000 K to operate.
e. occurs during helium flash.