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 > > View Available Hint(s) db = 455 km Submit Previous Answers ✓ Correct Part B How many grams of carbohydrate mcarbwould the bird have to consume to travel the same distance db? Express your answer in grams ▸ View Available Hint(s) mearl 8.95 g Submit Previous Answers ✓ Correct This is more than twice the amount of fat that was needed! In addition, to store 1 gram of carbohydrate (in the form of glycogen, the most common form of animal carbohydrate) about 3 grams of water are needed. Therefore, if energy were stored as carbohydrates, the bird would need to carry more than eight times the fuel mass to perform the same migratory flight! ▾ Part C Field observations suggest that a migrating ruby-throated hummingbird can fly across the Gulf of Mexico on a nonstop flight traveling a distance of about 800 km. Assuming that the bird has an average speed of 40.0 km/hr and an average power consumption of 1.70 W, how many grams of fat mfatdoes a ruby-throated hummingbird need to accomplish the nonstop flight across the Gulf of Mexico? Express your answer in grams. > View Available Hint(s) mfat= BUN for Part C for Part Cundo for Part C redo for Part C reset for Part C keyboard shortcuts for Part C help for Part C
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 > > View Available Hint(s) db = 455 km Submit Previous Answers ✓ Correct Part B How many grams of carbohydrate mcarbwould the bird have to consume to travel the same distance db? Express your answer in grams ▸ View Available Hint(s) mearl 8.95 g Submit Previous Answers ✓ Correct This is more than twice the amount of fat that was needed! In addition, to store 1 gram of carbohydrate (in the form of glycogen, the most common form of animal carbohydrate) about 3 grams of water are needed. Therefore, if energy were stored as carbohydrates, the bird would need to carry more than eight times the fuel mass to perform the same migratory flight! ▾ Part C Field observations suggest that a migrating ruby-throated hummingbird can fly across the Gulf of Mexico on a nonstop flight traveling a distance of about 800 km. Assuming that the bird has an average speed of 40.0 km/hr and an average power consumption of 1.70 W, how many grams of fat mfatdoes a ruby-throated hummingbird need to accomplish the nonstop flight across the Gulf of Mexico? Express your answer in grams. > View Available Hint(s) mfat= BUN for Part C for Part Cundo for Part C redo for Part C reset for Part C keyboard shortcuts for Part C help for Part C
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