Homework Help is Here – Start Your Trial Now!
Science
Physics
The first human-powered airplane to cross the English Channel was the Gossamer Albatross. A person turned the propeller by means of a bicycle pedaling mechanism. In order to keep the plane flying, he had to deliver 0.3 horse power (hp) to drive the mechanism throughout the duration of the 2 hours 49 mins flight. Human muscles have an efficiency of about 20%; that is 20% of the energy released in your body goes into doing mechanical work. a. What total energy did the pilot use during this flight? (1.13x10° J) b. A Big Mac hamburger provides about 500 kcal. How many such hamburgers would the pilot has to eat to obtain enough energy for the flight across the channel? (5.4) Note: 1 hp = 746 W, 1 cal = 4.2 J

The first human-powered airplane to cross the English Channel was the Gossamer Albatross. A person turned the propeller by means of a bicycle pedaling mechanism. In order to keep the plane flying, he had to deliver 0.3 horse power (hp) to drive the mechanism throughout the duration of the 2 hours 49 mins flight. Human muscles have an efficiency of about 20%; that is 20% of the energy released in your body goes into doing mechanical work. a. What total energy did the pilot use during this flight? (1.13x10° J) b. A Big Mac hamburger provides about 500 kcal. How many such hamburgers would the pilot has to eat to obtain enough energy for the flight across the channel? (5.4) Note: 1 hp = 746 W, 1 cal = 4.2 J

Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 18P
See similar textbooks
icon
Related questions
Question
The first human-powered airplane to cross the English Channel was the Gossamer Albatross. A person turned the propeller by means of a bicycle pedaling mechanism. In order to keep the plane flying, he had to deliver 0.3 horse power (hp) to drive the mechanism throughout the duration of the 2 hours 49 mins flight. Human muscles have an efficiency of about 20%; that is 20% of the energy released in your body goes into doing mechanical work. a. What total energy did the pilot use during this flight? (1.13x10° J) b. A Big Mac hamburger provides about 500 kcal. How many such hamburgers would the pilot has to eat to obtain enough energy for the flight across the channel? (5.4) Note: 1 hp = 746 W, 1 cal = 4.2 J
Transcribed Image Text:The first human-powered airplane to cross the English Channel was the Gossamer Albatross. A person turned the propeller by means of a bicycle pedaling mechanism. In order to keep the plane flying, he had to deliver 0.3 horse power (hp) to drive the mechanism throughout the duration of the 2 hours 49 mins flight. Human muscles have an efficiency of about 20%; that is 20% of the energy released in your body goes into doing mechanical work. a. What total energy did the pilot use during this flight? (1.13x10° J) b. A Big Mac hamburger provides about 500 kcal. How many such hamburgers would the pilot has to eat to obtain enough energy for the flight across the channel? (5.4) Note: 1 hp = 746 W, 1 cal = 4.2 J
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
Physics
ISBN:
9781133104261
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
Physics for Scientists and Engineers, Technology …
Physics for Scientists and Engineers, Technology …
Physics
ISBN:
9781305116399
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
University Physics Volume 1
University Physics Volume 1
Physics
ISBN:
9781938168277
Author:
William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:
OpenStax - Rice University
Physics for Scientists and Engineers: Foundations…
Physics for Scientists and Engineers: Foundations…
Physics
ISBN:
9781133939146
Author:
Katz, Debora M.
Publisher:
Cengage Learning
Glencoe Physics: Principles and Problems, Student…
Glencoe Physics: Principles and Problems, Student…
Physics
ISBN:
9780078807213
Author:
Paul W. Zitzewitz
Publisher:
Glencoe/McGraw-Hill
SEE MORE TEXTBOOKS