8.114 Three water-filled tanks as shown are connected by pipes as indicated. Determine the flowrate for each pipe. Does water flow in or out of Tank B? Neglect minor losses. Elevation 20 m ▼ = D = 0.08 m l = 200 m f = 0.020 Elevation = 60 m D = 0.10 m l = 200 m f = 0.015 D = 0.08 m l = 400 m f = 0.020 Elevation = 0

An electric hot water heater consumes 3.1 kilowatts of electricity and converts it to heat. How long will it take the water heater to heat a 67 gallon tank of water from 10 degrees Celsius to 50 degrees Celsius? (1 kilogram of water is 0.37 gallons, 1 Calorie = 4200 J).  It may be helpful to refer back to the weekly handout for guidance on this problem. Your final answer should be in minutes (rounded to the nearest 10 minutes).

What are the problems in statically intermediate equations?