EBK PHYSICS
5th Edition
ISBN: 8220103026918
Author: Walker
Publisher: PEARSON
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Chapter 9, Problem 90PP
To determine
The change in speed of the whale in knots as a result of the collision.
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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…
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
▾ 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)
Correct
mcarb 8.95 g
Submit
Part C
Previous Answers
Correct
This is more…
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…
Chapter 9 Solutions
EBK PHYSICS
Ch. 9.1 - Enhance Your Understanding (Answers given at the...Ch. 9.2 - Enhance Your Understanding (Answers given at the...Ch. 9.3 - Enhance Your Understanding (Answers given at the...Ch. 9.4 - Enhance Your Understanding (Answers given at the...Ch. 9.5 - Prob. 5EYUCh. 9.6 - Enhance Your Understanding (Answers given at the...Ch. 9.7 - Enhance Your Understanding (Answers given at the...Ch. 9.8 - Prob. 8EYUCh. 9 - If you drop your Keys, their momentum increases as...Ch. 9 - By what factor does an objects kinetic energy...
Ch. 9 - A system of particles is known to have zero...Ch. 9 - A system of particles is known to have zero...Ch. 9 - On a calm day you connect an electric fan to a...Ch. 9 - Crash statistics show that it is safer to be...Ch. 9 - (a) As you approach a stoplight, you apply the...Ch. 9 - An object at rest on a frictionless surface is...Ch. 9 - (a) Can two objects on a horizontal frictionless...Ch. 9 - Two cars collide at an intersection. If the cars...Ch. 9 - At the instant a bullet is fired from a gun, the...Ch. 9 - Prob. 12CQCh. 9 - In the classic movie The Spirit of St. Louis,...Ch. 9 - A tall, slender drinking glass with a thin base is...Ch. 9 - Prob. 15CQCh. 9 - Prob. 16CQCh. 9 - What is the mass of a mallard duck whose speed is...Ch. 9 - (a) What is the magnitude of the momentum of a...Ch. 9 - A 54 kg person walks due north with a speed of 1.2...Ch. 9 - A 26.2-kg dog is running northward at 2.70 m/s,...Ch. 9 - Predict/Calculate Two air-track carts move toward...Ch. 9 - A 0.145-kg baseball is dropped from rest. 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