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Car and Truck Problem: Suppose that you are driving an 18-wheeler tractor-trailer truck

Precalculus with Trigonometry: Concepts and Applications | 1st Edition | ISBN: 9781559533911 | Authors: Foerster ISBN: 9781559533911 468

Solution for problem 32 Chapter 5-5

Precalculus with Trigonometry: Concepts and Applications | 1st Edition

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Precalculus with Trigonometry: Concepts and Applications | 1st Edition | ISBN: 9781559533911 | Authors: Foerster

Precalculus with Trigonometry: Concepts and Applications | 1st Edition

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Problem 32

Car and Truck Problem: Suppose that you are driving an 18-wheeler tractor-trailer truck along the highway. A car pulls up alongside your truck and then moves ahead very slowly. As it passes, the combined sounds of the car and truck engines pulsate louder and softer. The combined sound can be either a sum of the two sinusoids or a product of them. a. The tachometer says that your trucks engine is turning at 3000 revolutions per minute (rev/min), which is equivalent to 50 revolutions per second (rev/sec). The pulsations come and go once a second, which means that the amplitude sinusoid has a period of two seconds. Write an equation for the sound intensity as a product of two sinusoids. Use cosine for each, with independent variable t seconds. Use 2 for the amplitude of the larger sinusoid and 1 for the smaller. to a sum of two sinusoids. d. Explain why the period of the amplitude sinusoid is two seconds, not one second.

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Exam #2 Study Guide Chapter 4 Carbohydrates (starting at slide #31)  The ADA recommends 25-35 grams of fiber daily (this is about 2X higher than the average intake)  Fiber acts as a chelating agent: bind minerals and carry them out of the body  Excessive consumption of fiber can lead to a blocked intestine: o Rare during eating patterns o Occurs with supplements o Too much bulk in the diet can limit food intake and cause both nutrient and energy deficiencies o When increasing fiber intake add 1-2 glasses of water and increase exercise  Carbohydrates to Glucose o Carbohydrates must be broken down into monosaccharides o Once in bloodstream carbohydrates travel to the liver: fructose and galactose are converted to glucose or related products  Trouble digesting milk: o Loss of the ability to produce lactose o Results in lactose intolerance o Symptoms: bloating, gas, pain, diarrhea  Glucose is the basic carbohydrate unit that each cell uses for energy o Body maintains internal supply in case of need o Body controls blood glucose concentration o Serves as structural roles in the body  The minimum DRI to feed the brain and reduce ketosis is 130 grams of carbohydrates daily for an average person  Carbohydrates below a healthy minimum o Body fat cannot be converted to glucose o With a severe deficiency the

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Chapter 5-5, Problem 32 is Solved
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Textbook: Precalculus with Trigonometry: Concepts and Applications
Edition: 1
Author: Foerster
ISBN: 9781559533911

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Car and Truck Problem: Suppose that you are driving an 18-wheeler tractor-trailer truck