Small birds like that in (Figure 1) can migrate over long distances without feeding, storing energy mostly as fat rather than carbohydrate. Fat is a good form of energy storage because it provides the most energy per unit mass: 1.00 grams of fat provides about 9.40 (food) Calories, compared to 4.20 (food) Calories per 1.00 grams of carbohydrate. Remember that Calories associated with food, which are always capitalized, are not exactly the same as calories used in physics or chemistry, even though they have the same name. More specifically, one food Calorie is equal to 1000 calories of mechanical work or 4184 joules. Therefore, in this problem use the conversion factor 1 Cal = 4184 J. Figure 1 of 1 ▼ Part A Consider a bird that flies at an average speed of 10.7 m/s and releases energy from its body fat reserves at an average rate of 3.70 W (this rate represents the power consumption of the bird). Assume that the bird consumes 4.00 g of fat to fly over a distance do without stopping for feeding. How far will the bird fly before feeding again? Express your answer in kilometers. ► View Available Hint(s) db = Submit ▾ Part B mcarb = ΙΠ ΑΣΦ Submit 1 How many grams of carbohydrate mcarb would the bird have to consume to travel the same distance di? Express your answer in grams ► View Available Hint(s) [Π ΑΣΦ ? Part C Complete previous part(s) km ? g
Small birds like that in (Figure 1) can migrate over long distances without feeding, storing energy mostly as fat rather than carbohydrate. Fat is a good form of energy storage because it provides the most energy per unit mass: 1.00 grams of fat provides about 9.40 (food) Calories, compared to 4.20 (food) Calories per 1.00 grams of carbohydrate. Remember that Calories associated with food, which are always capitalized, are not exactly the same as calories used in physics or chemistry, even though they have the same name. More specifically, one food Calorie is equal to 1000 calories of mechanical work or 4184 joules. Therefore, in this problem use the conversion factor 1 Cal = 4184 J. Figure 1 of 1 ▼ Part A Consider a bird that flies at an average speed of 10.7 m/s and releases energy from its body fat reserves at an average rate of 3.70 W (this rate represents the power consumption of the bird). Assume that the bird consumes 4.00 g of fat to fly over a distance do without stopping for feeding. How far will the bird fly before feeding again? Express your answer in kilometers. ► View Available Hint(s) db = Submit ▾ Part B mcarb = ΙΠ ΑΣΦ Submit 1 How many grams of carbohydrate mcarb would the bird have to consume to travel the same distance di? Express your answer in grams ► View Available Hint(s) [Π ΑΣΦ ? Part C Complete previous part(s) km ? g
Stars and Galaxies
9th Edition
ISBN:9781305120785
Author:Michael A. Seeds, Dana Backman
Publisher:Michael A. Seeds, Dana Backman
Chapter19: Astrobiology: Life On Other Worlds
Section: Chapter Questions
Problem 3DQ
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