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Author Question: The volume coefficient of thermal expansion for gasoline is 950 10-6 K-1. By how many cubic ... (Read 57 times)

jake

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on: Jul 29, 2018
The volume coefficient of thermal expansion for gasoline is 950  10-6 K-1. By how many cubic centimeters does the volume of 1.00 L of gasoline change when the temperature rises from 30C to 50C?
 
  A) 6.0 cm3
  B) 12 cm3
  C) 19 cm3
  D) 37 cm3

Question 2

A ball is projected upward at time t = 0 s, from a point on a flat roof 90 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground.
 
  The initial velocity of the ball is Consider all quantities as positive in the upward direction. The vertical velocity of the ball when it is above the ground is closest to A) -81 m/s.
  B) -64 m/s.
  C) -48 m/s.
  D) -32 m/s.
  E) -97 m/s.


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gabrielle_lawrence

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

C

Answer to Question 2

A


jake

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Reply 2 on: Jul 29, 2018
:D TYSM

peter

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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