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Author Question: A mass of 1000 kg hangs at the end of a steel rod 5.0 m in length. The diameter of the rod is 0.80 ... (Read 79 times)

hbsimmons88

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on: Jul 27, 2018
A mass of 1000 kg hangs at the end of a steel rod 5.0 m in length. The diameter of the rod is 0.80 cm and Young's modulus for the rod is 210,000 MN/m2. What is the elongation of the rod?
 
  A) 1.2 cm
  B) 0.46 cm
  C) 0.12 cm
  D) 1.8 cm
  E) 0.047 cm

Question 2

A device obeying Ohm's law must have a resistance which
 
  A) is proportional to voltage.
  B) is proportional to current.
  C) is constant.
  D) is zero.


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taylorsonier

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


hbsimmons88

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Reply 2 on: Jul 27, 2018
Excellent

diana chang

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Reply 3 on: Yesterday
Wow, this really help

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