While filling up your car with gasoline, you notice that it takes 2 minutes to dispense 15 gallons of gasoline. What is the mass flow rate if water has a density of 10009/m 3 and gasoline has a specific gravity of o.72? O a. 3.4*/sec O b. 0.34k/sec O . 5400KE/sec O d. 54k/sec

A thunderstorm is brewing in the distance. Upon seeing a flash of lightning you begin counting the seconds until you hear the thunder and notice that it took 5 seconds for the sound of thunder to reach you. Assuming the speed of sound in air to be 340m/s , how far away was the lightning strike?   a. 5 miles     b. 2 miles     c. 10 miles     d. 1 mile

Through a refinery, fuel ethanol is flowing in a pipe at a velocity of 1 m/s and a pressure of 101300 Pa. The refinery needs the ethanol to be at a pressure of 2 atm (202600 Pa) on a lower level. How far must the pipe drop in height in order to achieve this pressure? Assume the velocity does not change. Make a graphical presentation of the problem (pipe).

Crude oil being produced from a well is known to be a mixture of 30% water and 70% oil by volume. This mixture is stored in a vertical cylindrical tank and allowed to separate into a lower water layer and upper oil layer. The tank is vented to the atmosphere on top and the gauge pressure at the bottom of the tank is measured to be 87,000 Pa. Take the density of the water to be 998 kg/m³ and that of the oil to be 840 kg/m 3. Find the heights of the individual layers of water and oil in meters, i.e. hwater and hoil shown below. P oil vent water air h oil h water