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 77 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
Gracias!

mjenn52

  • Member
  • Posts: 351
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Effects of growth rate on development. Effects of growth rate on development.
Tree species richness in North America is correlated with evapotranspiration rate. Tree species richness in North America is correlated with evapotranspiration rate.
Auscultation. The stethoscope is pressed against the body wall to listen for sound waves associated Auscultation. The stethoscope is pressed against the body wall to listen for sound waves associated
Exercise increases the heart rate. Exercise increases the heart rate.
Maximal Heart Rate Over Time Maximal Heart Rate Over Time
Factors Affecting Body Temperature Factors Affecting Body Temperature
Video: Major Elements in Biological Molecules: Proteins

For a complete list of videos, visit our video library