Final answer:
The input of a .60gph oil nozzle would be 84,000 BTU
Step-by-step explanation:
The input of a .60gph oil nozzle can be calculated by converting the flow rate from gallons per hour to British Thermal Units (BTU). To do this, we need to know the energy content per gallon of oil. Let's assume that the energy content is 140,000 BTU/gallon. To find the input, we multiply the flow rate (0.60 gph) by the energy content per gallon (140,000 BTU/gallon).
Input = Flow rate x Energy content per gallon
Input = 0.60 gph x 140,000 BTU/gallon
Therefore, the input of a .60gph oil nozzle would be 84,000 BTU (Option C).