Final answer:
It would take approximately 22.22 hours to fill an 80,000 L pool with a garden hose at a rate of 60 L/min and less than a second with a river flowing at 5000 m³/s.
Step-by-step explanation:
To estimate the time it would take to fill a private swimming pool with a capacity of 80,000 liters using a garden hose that delivers 60 liters per minute, we can perform a simple division: 80,000 L ÷ 60 L/min = 1333.33 minutes. To convert this into hours, we divide by 60, resulting in approximately 22.22 hours to fill the pool using the hose.
In the case of diverting a moderate size river that flows at 5000 cubic meters per second, we can also calculate the filling time. First, we need to convert the river's flow rate into liters per second by multiplying 5000 m³/s by 1,000,000 (since 1 m³ is equivalent to 1,000 liters). This gives us 5,000,000,000 L/s. Using this flow rate, it would take a mere fraction of a second to fill the 80,000 L pool, illustrating the immense power and volume of a moderate size river's flow.
Green could pertain to the color-coding of hydrants indicating available water flow or could refer to environmental topics related to water usage and management, such as the use of qanats in Iran to channel water efficiently in a desert climate.