Final answer:
The tongue load for Nissan vehicles is not specified in the question, but it is generally within the industry standard range of 10%-15% of the trailer load. For exact figures, one should refer to the vehicle's owner's manual or contact Nissan directly.
Step-by-step explanation:
Tongue load is the weight of a trailer at its tongue or coupling point. Typically, tongue load or tongue weight is 10 to 15 percent of the total weight of the trailer. The student is asking about calculations related to tongue load, which is the amount of the trailer's weight that presses down on the towing vehicle's hitch. According to the industry standard, the tongue load should be between 10%-15% of the trailer load.
Although the precise figure for Nissan's calculation isn't provided in the question, it would likely be within this range. To determine the exact tongue load for a Nissan vehicle, one would typically refer to the owner's manual or contact the manufacturer, as tongue load can also be influenced by vehicle-specific capabilities and limitations.