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Some animals have learned to take advantage of the Bernoullieffect without having read a

Chapter 3, Problem 3.21

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QUESTION:

Some animals have learned to take advantage of the Bernoullieffect without having read a fluid mechanics book. For example,a typical prairie dog burrow contains two entrancesa flat frontdoor and a mounded back door as shown in Fig. P3.21. When thewind blows with velocity V0 across the front door, the averagevelocity across the back door is greater than V0 because of themound. Assume the air velocity across the back door is 1.07V0. Fora wind velocity of 6 m/s, what pressure differences, p1 p2, aregenerated to provide a fresh airflow within the burrow?

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QUESTION:

Some animals have learned to take advantage of the Bernoullieffect without having read a fluid mechanics book. For example,a typical prairie dog burrow contains two entrancesa flat frontdoor and a mounded back door as shown in Fig. P3.21. When thewind blows with velocity V0 across the front door, the averagevelocity across the back door is greater than V0 because of themound. Assume the air velocity across the back door is 1.07V0. Fora wind velocity of 6 m/s, what pressure differences, p1 p2, aregenerated to provide a fresh airflow within the burrow?

ANSWER:

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Apply the Bernoulli equation between points  and

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