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Author Question: The lifetime of a + meson normally is 18 nanoseconds. In a large particle accelerator, scientists ... (Read 29 times)

beccaep

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on: Jul 27, 2018
The lifetime of a + meson normally is 18 nanoseconds. In a large particle accelerator, scientists can create p+ mesons moving at speeds very close to the speed of light.
 
  What do the scientists observe when they measure the lifetime of a + meson that is created at very high speed? A) The + meson lasts 18 nanoseconds.
  B) The + meson lasts much less than 18 nanoseconds.
  C) The + meson lasts much more than 18 nanoseconds.
  D) The + meson no longer decays, and remains as a stable particle.

Question 2

The distinguishing feature of a starburst galaxy is
 
  A) the presence of an unusually large number of binary star systems containing X-ray bursters.
  B) a very large luminosity compared to the total luminosity of the Milky Way.
  C) strong radio emission from lobes of material well outside the visible boundaries of the galaxy.
  D) a rate of star formation that may be 100 or more times greater than that in the Milky Way.


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nmyers

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

C

Answer to Question 2

D


beccaep

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

parker125

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Reply 3 on: Yesterday
Excellent

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