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# To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the

ISBN: 9780073380322 410

## Solution for problem 11-45 Chapter 11

Fluid Mechanics Fundamentals and Applications | 3rd Edition

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Problem 11-45

To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the design of side rearview mirrors has changed drastically in recent decades from a simple circular plate to a streamlined shape. Determine the amount of fuel and money saved per year as a result of replacing a 13-cm-diameter flat mirror by one with a hemispherical back, as shown in the figure. Assume the car is driven 24,000 km a year at an average speed of 95 km/h. Take the density and price of gasoline to be 0.75 kg/L and \$0.90/L, respectively; the heating value of gasoline to be 44,000 kJ/kg; and the overall efficiency of the engine to be 30 percent.

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##### ISBN: 9780073380322

This textbook survival guide was created for the textbook: Fluid Mechanics Fundamentals and Applications, edition: 3. The full step-by-step solution to problem: 11-45 from chapter: 11 was answered by , our top Engineering and Tech solution expert on 03/14/18, 05:11PM. This full solution covers the following key subjects: . This expansive textbook survival guide covers 12 chapters, and 1453 solutions. The answer to “To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the design of side rearview mirrors has changed drastically in recent decades from a simple circular plate to a streamlined shape. Determine the amount of fuel and money saved per year as a result of replacing a 13-cm-diameter flat mirror by one with a hemispherical back, as shown in the figure. Assume the car is driven 24,000 km a year at an average speed of 95 km/h. Take the density and price of gasoline to be 0.75 kg/L and \$0.90/L, respectively; the heating value of gasoline to be 44,000 kJ/kg; and the overall efficiency of the engine to be 30 percent.” is broken down into a number of easy to follow steps, and 115 words. Fluid Mechanics Fundamentals and Applications was written by and is associated to the ISBN: 9780073380322. Since the solution to 11-45 from 11 chapter was answered, more than 304 students have viewed the full step-by-step answer.

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