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Author Question: If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of ... (Read 78 times)

tnt_battle

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on: Jul 29, 2018
If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of the water from 15C to 25C? The specific heat of water is 4190 J/kgK.
 
  A) 22 s B) 5.3 s C) 114 h D) 93 s

Question 2

An open organ pipe is tuned to a given frequency. A second pipe with both ends open resonates with twice this frequency. What is the ratio of the length of the first pipe to the second pipe?
 
  A) 1
  B) 2
  C) 4
  D) .5


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komodo7

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

D

Answer to Question 2

A


tnt_battle

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

6ana001

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Reply 3 on: Yesterday
Gracias!

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