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Author Question: A proton, which has a mass of 1.67 10-27, is moving at 0.80c relative to the laboratory. What does ... (Read 34 times)

nevelica

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A proton, which has a mass of 1.67  10-27, is moving at 0.80c relative to the laboratory. What does a physicist in that lab measure for its momentum? (c = 3.0  108 m/s)
 
  A) 4.0  10-19 kg  m/s
  B) 4.4  10-19 kg  m/s
  C) 5.0  10-19 kg  m/s
  D) 5.8  10-19 kg  m/s
  E) 6.7  10-19 kg  m/s

Question 2

Given that the speed of an electron in the ground state of hydrogen is 2190 km/s, what is the speed of an electron in the n = 4 orbit of hydrogen?
 
  A) 547 km/s
  B) 31,000 km/s
  C) 139 km/s
  D) 178 km/s
  E) 2180 km/s


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dlook33

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nevelica

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Reply 2 on: Jul 29, 2018
Gracias!


rleezy04

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Reply 3 on: Yesterday
Excellent

 

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