An important underlying feature of hydraulic devices is the ...

[meagbuch]

An important underlying feature of hydraulic devices is the conservation of
 
  A) pressure.
  B) momentum.
  C) energy.
  D) all of the above
  E) none of the above

Question 2

A bubble of air released from the bottom of a lake
 
  A) rises to the top at constant volume.
  B) becomes smaller as it rises.
  C) becomes larger as it rises.
  D) alternately expands and contracts as it rises.
  E) none of the above

[bubulittle310@msn.cn]

Answer to Question 1

Answer: C

Answer to Question 2

Answer: C