Problems:

5.21

5.23

Answers:

No answers will be given.

Hints:

Reversible means no losses.

Please Remember:

• Read EACH word.
• Draw some pictures (one for each state, or of the device).
  OR DRAW A SCHEMATIC OF THE CYCLIC DEVICE.
• Write the given information under each/the picture.
• Write what you know about the process.
• Write what it is you are to find.
• Write write the equations you are to use (or might want to use).
• PLEASE try to be organized.