Lesson: Flow Rate and ContinuityPhysics
In this lesson, we will learn how to calculate the flow rate of a liquid given the dimensions of the channel that it is flowing in.
Sample Question Videos
The Huka Falls on the Waikato River is one of New Zealand’s most visited natural tourist attractions. On average, the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20 m wide and averages 20 m deep.
What is the average speed of the river in the gorge?
What is the average speed of the water in the river downstream of the falls when it widens to 60 m and its depth increases to an average of 40 m?
The inside volume of a house is equivalent to that of a rectangular solid 13.0 m wide by 20.0 m long by 2.75 m high. The house is heated by a forced air gas heater. The main uptake air duct of the heater is a cylinder 0.300 m in diameter. What is the average speed of air in the duct if it carries a volume equal to that of the house’s interior every 15 minutes?
What is the average flow rate of gasoline, in cubic centimeters per second, to the engine of a car traveling at 100 km/h if the car has an average fuel economy of 10.0 km/L?