How many distinct rating problems can one identify to be characterized by: (a) one known and other unknown mass flow rate? (b) one known and other unknown inlet temperature? (i). List all the...

How many distinct rating problems can one identify to be characterized by:

(a) one known and other unknown mass flow rate?

(b) one known and other unknown inlet temperature?

(i). List all the information you need to perform the stress analysis of a given heat exchanger.