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It costs $30,000 to retrofit the gasolinepumps at a certain filling station so the pumps can dispense E85 fuel (85% ethanol and 15% gasoline). If the station makes a profit of $0.08 per gallon from selling E85 and sells an average of 20,000 gallons of E85 per month, how many months will it take for the owner to recoup her $30,000 investment in the retrofitted pumps?
The interest rate is 1% per month
ethanol blended with gasoline can be used to power a flex-fueledcar. one particular blend that is gaining in popularity
A “friend” asks you to construct the phase diagram for a new binary alloy of A and B. The clues are: (i) A and B are completely immiscible in each other and no solid solutions exist in the diagram, (ii) no stoichiometric compounds exist in the diagra..
the molar volume of al2o3 at 25 degrees celsius and 1 atm is 25.715 ccmol. its coefficient of thermal expansion is 26
a carnot heat engine using 1 kg of air has the following conditions heat addition beginning at 15 mpa and 1200 k and
with a mass of 1000 kg travels at 80kmh has a four-pad braking system. the microk between the brakes and the wheels is
the equation below defines the acceleration of a particle where a is in ms2 and t is in seconds. determine the position
A linear velocity profile was used to model flow in a laminar incompressible boundary layer in Problem 5.10. Express the rotation of a fluid particle. Locate the maximum rate of rotation. Express the rate of angular deformation for a fluid particle.
Consider the conditions of Example 3.12 for an air environment, except now the air and surroundings temperatures are both 15°C. Humans respond to cold by shivering, which increases the metabolic heat generation rate. What would the metabolic heat ..
A closed, frictionless, piston-cylinder assembly contains 4 lbm of H20. Beginning with an initial volume of 10 ft^3, the H2O is compressed slowly until the volume has been reduced to 10 percent of the initial volume. During the process, heat transfer..
a criticalcomponent of the death copter is a solid circular synchronizing shaft that is 4 inches in diameter and
one kilogram of refrigerant 22 undergoes a process from 0.2 mpa 20 c to a state where the pressure is 0.06 mpa. during
1. what types of engineers e.g. civil construction mechanical industrial material science electrical etc. do you think
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