A 57 kg woman athlete can generate a sustained specific power output of 5.0 W/kg. One training exercise is to push a heavy sled across the grass at a steady speed, which takes a horizontal pushing force of 155 N.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
icon
Related questions
Question
Part A
A 57 kg woman athlete can generate a sustained
specific power output of 5.0 W/kg. One training
exercise is to push a heavy sled across the grass at
a steady speed, which takes a horizontal pushing
force of 155 N.
What speed can she maintain for a sustained period of time?
Express your answer with the appropriate units.
µÁ
Value
Units
U =
Submit
Request Answer
Part B
How much stored chemical energy will she "burn" in 10 minutes if her body is 25% efficient at converting chemical energy
into mechanical energy?
Express your answer with the appropriate units.
HÅ
E =
Value
Units
%3D
Submit
Request Answer
Transcribed Image Text:Part A A 57 kg woman athlete can generate a sustained specific power output of 5.0 W/kg. One training exercise is to push a heavy sled across the grass at a steady speed, which takes a horizontal pushing force of 155 N. What speed can she maintain for a sustained period of time? Express your answer with the appropriate units. µÁ Value Units U = Submit Request Answer Part B How much stored chemical energy will she "burn" in 10 minutes if her body is 25% efficient at converting chemical energy into mechanical energy? Express your answer with the appropriate units. HÅ E = Value Units %3D Submit Request Answer
•Part C
Calories are more familiar units than joules for thinking about the body's energy use. A useful conversion factor is
1 Cal = 4.2 kJ, where Cal įs the abbreviation for a food calorie. How many calories does the woman burn during the
10 min workout?
%3D
Express your answer in calories.
ΑΣφ
?
Cal
%3D
Submit
Request Answer
Transcribed Image Text:•Part C Calories are more familiar units than joules for thinking about the body's energy use. A useful conversion factor is 1 Cal = 4.2 kJ, where Cal įs the abbreviation for a food calorie. How many calories does the woman burn during the 10 min workout? %3D Express your answer in calories. ΑΣφ ? Cal %3D Submit Request Answer
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Conservation of energy
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON