A metal cylindrical sleeve has an inner radius A and an outer ...

[dejastew]

A metal cylindrical sleeve has an inner radius A and an outer radius B. The metal has a positive thermal expansion coefficient. When the sleeve's temperature increases
 
  A)
 
  the outer radius decreases and the inner radius increases.
  B)
 
  the inner radius decreases and the outer radius increases.
  C)
 
  both the inner and outer radii decrease.
  D)
 
  both the inner and outer radii increase.
  E)
 
  The sleeve's length decreases.

Question 2

A runner leaves the starting blocks and accelerates at 2.60 m/s2 for 4.00 s. What speed does the runner reach?
 
  A)
 
  32.0 m/s
 
  B)
 
  10.4 m/s
 
  C)
 
  23.3 m/s
 
  D)
 
  1.45 m/s
 
  E)
 
  4.65 m/s

[s.meritte]

Answer to Question 1

D

Answer to Question 2

B

[dejastew]

Thanks

[s.meritte]

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