A pipeline carries petroleum at the rate of 795 m³/s from petroleum-well to the tank farther. The pressures of the petroleum in well and tank are 1793x103 Pa gage and 862x103 Pa gage, respectively....

Extracted text: A pipeline carries petroleum at the rate of 795 m³/s from petroleum-well to the tank farther. The pressures of the petroleum in well and tank are 1793x103 Pa gage and 862x103 Pa gage, respectively. The tank is 15.5 m higher than the petroleum-well. The density of petroleum is 777 kg/m³. Calculate the friction loss EF in J/kg mass.