This topic contains a solution. Click here to go to the answer

Author Question: At room temperature, a typical person transfers energy to the surroundings at the rate of 62 W. ... (Read 26 times)

tuffie

  • Hero Member
  • *****
  • Posts: 534
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
Answer to Question 1

C

Answer to Question 2

D



tuffie

  • Hero Member
  • *****
  • Posts: 534
Both answers were spot on, thank you once again



thall411

  • Sr. Member
  • ****
  • Posts: 332

 

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

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?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

For a complete list of videos, visit our video library