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Author Question: At room temperature, a typical person transfers energy to the surroundings at the rate of 62 W. ... (Read 89 times)

tuffie

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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.


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thall411

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

D


tuffie

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


thall411

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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