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

Author Question: At room temperature, a typical person transfers energy to the surroundings at the rate of 62 W. ... (Read 73 times)

tuffie

  • Hero Member
  • *****
  • Posts: 534
on: Jul 29, 2018
At room temperature, a typical person transfers energy to the surroundings at the rate of 62 W.
 
  If this energy transfer has to be made up by an equivalent food intake, how many kilocalories (food calories) does this person need to consume every day just to make up this energy? (1 cal = 4.186 J) A) 1000 kcal
  B) 1100 kcal
  C) 1300 kcal
  D) 1500 kcal
  E) 1600 kcal

Question 2

The length of a certain wire is doubled and at the same time its radius is reduced by a factor of 2. What is the new resistance of this wire?
 
  A) It is 2 times as large.
  B) It is 4 times as large.
  C) It is 6 times as large.
  D) It it 8 times as large.
  E) It is  as large.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

thall411

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

D


tuffie

  • Hero Member
  • *****
  • Posts: 534
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


thall411

  • Sr. Member
  • ****
  • Posts: 332
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Diagram of a typical fossil-fueled power plant Diagram of a typical fossil-fueled power plant
Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many
Typical Organization of the CPT Manual Typical Organization of the CPT Manual
Influence of enzyme-substrate affinity on the rate of an enzyme-catalyzed reaction. Influence of enzyme-substrate affinity on the rate of an enzyme-catalyzed reaction.
A typical engine design that uses both pressure and splash lubrication. Oil travels under pressure ... A typical engine design that uses both pressure and splash lubrication. Oil travels under pressure ...
A typical catalytic converter with a monolithic substrate. A typical catalytic converter with a monolithic substrate.
Video: Secretin (inhibiting gastric acid secretion), Cholecystokinin (fat digestion) & Cholecystokinin

For a complete list of videos, visit our video library