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Author Question: Compared with special relativity, general relativity is more concerned with A) acceleration. B) ... (Read 35 times)

Metfan725

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on: Jul 29, 2018
Compared with special relativity, general relativity is more concerned with
 
  A) acceleration.
  B) gravitation.
  C) spacetime geometry.
  D) all of the above
  E) none of the above

Question 2

A steel bar with a cross-sectional area of 1.00  10-4 m2 is heated to 100C and then it is clamped at both ends with clamps that are 2.0 m apart.
 
  When the bar cools to 20C what is the force exerted by the bar on the clamps? The coefficient of thermal expansion of steel is 12  10-6 K-1 and Young's modulus for steel is 20  1010 N/m2. A) 1.9  104 N
  B) 3.8  104 N
  C) 1.9  103 N
  D) 3.8  103 N
  E) 1.9  105 N


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yasmin

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

Answer: D

Answer to Question 2

A


Metfan725

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

steff9894

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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