Final answer:
The subject of this question is Physics relating to the fuel system and fuel tank quantities.
Step-by-step explanation:
In the given question, the subject is relating to the fuel system, specifically the fuel tank quantities. The fuel tank quantities are provided for different types of fuel, such as JP-8, No. R1 or R4, No. 1 or 4, No. 2 or 3, and the Center tank. The total fuel quantity is also given as 162,214 lbs.