Final answer:
Approximately 782 MJ of fuel is protected from the transfer pumps in the mains.
Step-by-step explanation:
In this question, you are asking about the amount of fuel protected from the transfer pumps in the mains. Based on the provided information, a car refueling at a gasoline station transfers energy at a rate of about 15 MW when the transfer rate is approximately 6 gallons (23 L) per minute. Gasoline contains about 34 MJ per liter.
To calculate the amount of fuel protected from the transfer pumps, we need to multiply the transfer rate (23 L) by the energy content of gasoline (34 MJ per liter). This gives us:
Amount of fuel protected = Transfer rate x Energy content of gasoline
Amount of fuel protected = 23 L x 34 MJ per liter
Amount of fuel protected = 782 MJ
Therefore, approximately 782 MJ of fuel is protected from the transfer pumps in the mains.