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Author Question: The exterior of a supersonic airplane is made of aluminum, which has a coefficient of linear ... (Read 160 times)

ereecah

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on: Jul 29, 2018
The exterior of a supersonic airplane is made of aluminum, which has a coefficient of linear expansion of 24  10-6 K-1. At 15C, the plane measures 62.1 m in length.
 
  When the plane is in flight, friction with the air increases the temperature of the exterior skin to 200C. What is the change in the length of the outer skin of the plane?
  A) 32 cm B) 20 cm C) 36 cm D) 24 cm E) 28 cm

Question 2

The smallest kinetic energy that an electron in a box (an infinite well) can have is zero.
 
  A) True
  B) False


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robbielu01

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

E

Answer to Question 2

B


ereecah

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Reply #2 on: Jul 29, 2018
Thank you!


robbielu01

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Reply #3 on: Jul 29, 2018
Always glad to help...


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