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Author Question: Two spaceships approaching each other move at very close to the speed of light, each sending a beam ... (Read 53 times)

bb

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on: Jul 29, 2018
Two spaceships approaching each other move at very close to the speed of light, each sending a beam of light to the other. Each measures the speed of light from the other spaceship as
 
  A) slightly less than c.
  B) c.
  C) slightly greater than c.
  D) much greater than c.

Question 2

A 25-kg television set rests on four rubber pads, each having a height of 1.0 cm and a radius of 0.60 cm. A 200-N horizontal force is applied to the television set. How far does it move sideways? The shear modulus of rubber is 2.6  106 N/m2.
 
  A) 6.8 mm
  B) 3.4 mm
  C) 1.7 mm
  D) 1.5 mm
  E) 1.3 mm


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yasmina

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

Answer: B

Answer to Question 2

C


bb

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

xiaomengxian

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Reply 3 on: Yesterday
Excellent

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