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 . Assuming that the bird has an average speed of 40.0 and an average power consumption of 1.70 , how many grams of fat does a ruby-throated hummingbird need to accomplish the nonstop flight across the Gulf of Mexico?

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 Calories, compared to 4.20 (food) Calories per 1.00 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 calories of mechanical work or 4184 joules. Therefore, in this problem use the conversion factor 1 Cal = 4184 J. I Review of fat provides about 9.40 (food) 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 d, without stopping for feeding. How far will the bird fly before feeding again? s equal to 1000 Express your answer in kilometers. View Available Hint(s) Figure 1 of 1 ? di = km Submit Part B How many grams of carbohydrate marh would the bird have to consume to travel the same distance d, ? Express your answer in grams