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Author Question: The critical angle for a substance in air is measured at 53.7. If light enters this substance from ... (Read 41 times)

brutforce

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on: Jul 29, 2018
The critical angle for a substance in air is measured at 53.7. If light enters this substance from air at 45.0 with the normal, at what angle with the normal will it continue to travel?
 
  A) 34.7 B) 53.7
  C) 45.0 D) It will not continue, but will be totally reflected.

Question 2

The International Space Station is orbiting at an altitude of about 370 km above the earth's surface. The mass of the earth is 5.97  1024 kg, the radius of the earth is 6.38  106 m, and G = 6.67  10-11 N  m2/kg2. Assume a circular orbit.
 
  (a) What is the period of the International Space Station's orbit? (b) What is the speed of the International Space Station in its orbit?


TheNamesImani

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

A

Answer to Question 2

(a) 5.5 103 s (b) 7.7 103 m/s


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brutforce

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


TheNamesImani

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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