The size of a galaxy's central black hole is proportional to the ...

[c0205847]

The size of a galaxy's central black hole is proportional to the mass of its disk.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

An atom must emit a photon when a(n) ____.
 
  a. electron moves from a lower to a higher energy level
  b. proton moves from a lower to a higher energy level
  c. proton moves from a higher to a lower energy level
  d. electron moves from a higher to a lower energy level
  e. atom becomes ionized

[amit]

Answer to Question 1

False

Answer to Question 2

d

[c0205847]

Thanks

[amit]

Welcome