10%) problem 7: water flows through a water hose at a rate of q1 = 620 cm3/s, the diameter of the hose is d1 = 1.99 cm. a nozzle is attached to the water hose. the water leaves the nozzle at a velocity of v2 = 10.4 m/s. show answer no attempt 17% part (a) enter an expression for the cross-sectional area of the hose, a1, in terms of its diameter, d1.

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.