The mass of a single galaxy might be found by a. the double ...

[ENagel]

The mass of a single galaxy might be found by
 
  a. the double galaxy method.
  b. the rotation curve method.
  c. the cluster method.
  d. any of the methods (i.e., double galaxy, rotation curve, cluster)
  e. none of these methods.

Question 2

The pressure of a gas depends on the temperature and density of the gas.
 
  a. True
  b. False
  Indicate whether the statement is true or false

[blfontai]

Answer to Question 1

b

Answer to Question 2

True

[ENagel]

Excellent

[softEldritch]

Thanks for the timely response, appreciate it