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Author Question: The coefficient of linear expansion of aluminum is 24.0 10-6 K-1, and the density of aluminum at 0C ... (Read 101 times)

DyllonKazuo

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The coefficient of linear expansion of aluminum is 24.0  10-6 K-1, and the density of aluminum at 0C is 2.70  103 kg/m3. What is the density of aluminum at 300C?
 
  A) 3.93  103 kg/m3
  B) 2.73  103 kg/m3
  C) 2.70  103 kg/m3
  D) 2.67  103 kg/m3
  E) 2.64  103 kg/m3

Question 2

What is the intensity of a 70-dB sound? The threshold of human hearing is 1.0  10-12 W/m2.
 
  A) 10-4 W/m2
  B) 10-5 W/m2
  C) 10-6 W/m2
  D) 10-7 W/m2


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Loise Hard

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DyllonKazuo

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Reply 2 on: Jul 29, 2018
Wow, this really help


JaynaD87

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Reply 3 on: Yesterday
Gracias!

 

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