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Author Question: For the Doppler effect to occur, there must be a. a moving source. b. a moving observer. c. ... (Read 95 times)

Ebrown

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on: Jul 28, 2018
For the Doppler effect to occur, there must be
 a. a moving source.
  b. a moving observer.
  c. relative motion between a source and an observer.
  d. no motion.

Question 2

The energy needed to change a He+ ion in the ground state into a He2+ ion is
 a. 13.6 eV
  b. 54.4 eV
  c. 112.4 eV
  d. 92.9 eV
  e. 27.2 eV


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at

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

b


Ebrown

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  • Posts: 567
Reply 2 on: Jul 28, 2018
Wow, this really help

sultana.d

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Reply 3 on: Yesterday
:D TYSM

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