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Author Question: A 2.0 mm diameter wire of length 20 m has a resistance of 0.25 . What is the resistivity of the ... (Read 390 times)

swpotter12

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on: Jul 29, 2018
A 2.0 mm diameter wire of length 20 m has a resistance of 0.25 . What is the resistivity of the wire?
 
  A) 0.25   m
  B) 5.0  10-7   m
  C) 3.9  10-8   m
  D) 4.0  10-7   m
  E) 16  10-8   m

Question 2

In Figure 7.7, a 5.00-kg block is moving at 5.00 m/s along a horizontal frictionless surface toward an ideal spring that is attached to a wall. After the block collides with the spring, the spring is compressed a maximum distance of 0.68 m.
 
  What is the speed of the block when the spring is compressed to only one-half of the maximum distance?


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randomguy133

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

C

Answer to Question 2

4.3 m/s


swpotter12

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Reply #2 on: Jul 29, 2018
TY


randomguy133

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Reply #3 on: Jul 29, 2018
You're welcome


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