This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A person is walking outdoors on a cold day when the temperature is -20C. He is breathing at the rate ... (Read 21 times)

nautica902

  • Hero Member
  • *****
  • Posts: 591
on: Jul 29, 2018
A person is walking outdoors on a cold day when the temperature is -20C. He is breathing at the rate of 16 breaths per minute, and each time he breathes in he inhales 0.0050 m3 of air.
 
  At what rate does he lose heat from breathing if the air in his lungs is heated to body temperature (37C) 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) 90 W B) 150 W C) 60 W D) 100 W E) 300 W

Question 2

An n-type semiconductor is produced by
 
  A) pure crystals of germanium.
  B) doping the host crystal with donor impurities.
  C) doping the host crystal with acceptor impurities.
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ahnyah

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


nautica902

  • Member
  • Posts: 591
Reply 2 on: Jul 29, 2018
Excellent

ebonylittles

  • Member
  • Posts: 318
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Taking a Patient’s Axillary Temperature Taking a Patient’s Axillary Temperature
Temperature Profile of Earth’s Atmosphere Temperature Profile of Earth’s Atmosphere
The diaphragm: The major muscle of breathing. The diaphragm: The major muscle of breathing.
Top Ten States Ranked by Rate or Reported Bacterial STI Cases in 2011 Top Ten States Ranked by Rate or Reported Bacterial STI Cases in 2011
Adiabatic Temperature Changes Adiabatic Temperature Changes
Variations in Ocean Water Temperature With Depth Variations in Ocean Water Temperature With Depth
Video: Role of complement proteins

For a complete list of videos, visit our video library