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Author Question: There are 640 acres in a square mile, and 5280 feet in one mile. What is the length in feet (to the ... (Read 100 times)

Haya94

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There are 640 acres in a square mile, and 5280 feet in one mile. What is the length in feet (to the nearest foot) of the side of a square having an area of one acre?
 
  A) 660 feet
  B) 209 feet
  C) 165 feet
  D) 412 feet
  E) 435 feet

Question 2

A 10.0-kg shell is traveling horizontally to the right at 25.0 m/s relative to the ground when it explodes into two fragments, one of mass 3.00 kg and the other of mass 7.00 kg.
 
  The lighter fragment goes directly forward, and the explosion releases 1.50  103 J of mechanical energy to the fragments. Find the magnitude and direction of the velocity of the heavier fragment relative to the ground just after the explosion. Ignore the effect of any ejected gases.



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jaygar71

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Answer to Question 1

B

Answer to Question 2

13.7 m/s to the right




Haya94

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


diana chang

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Reply 3 on: Yesterday
Excellent

 

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