Top Posters
Since Sunday
s
3
3
d
3
s
2
c
2
G
2
y
2
t
2
2
k
2
j
2
e
2
Home Q & A Board Science-Related Homework Help Physics
New Topic  
ppk ppk
wrote...
Go to Answer
Valued Member
On Hiatus
Posts: 3560
Rep: 58 2
12 years ago
A jogger is running outdoors on a cold day when the temperature is -20.0°C. Each time she breathes, she inhales 0.00450 m3 of air. She is breathing at the rate of 25 breaths per minute. How much heat does she lose from breathing during 20.0 minutes of jogging if the air in her lungs is heated to body temperature (37°C) before it is exhaled? The specific heat of air is 1020 J/(kg?K) and the density of air is 1.29 kg/m3.
A) 169 kJ
B) 278 kJ
C) 354 kJ
D) 431 kJ
E) 543 kJ
Read 803 times
1 Reply
Replies
Answer accepted by topic starter
duddyduddy
wrote...
#1
Staff Member
Top Poster
Posts: 7813
Rep: 1650 16
12 years ago
Sign in or Sign up in seconds to unlock everything for free
YYeer12
- Master of Science in Biology
- Bachelor of Science

Related Topics
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1276 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 338
  
 303
  
 308
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 436
Previous poll results: Who's your favorite biologist?