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Author Question: The threshold of hearing is a. 0 dB. b. 140 dB. c. 40 dB. d. 110 dB. e. 1 ... (Read 133 times)

melina_rosy

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  • Posts: 531
on: Jul 28, 2018
The threshold of hearing is
 a. 0 dB.
  b. 140 dB.
  c. 40 dB.
  d. 110 dB.
  e. 1 dB.

Question 2

An electron in a hydrogen atom makes a transition from the n = 4 to the n = 3 energy state. Determine the energy (in eV) of the emitted photon.
 a. 0.54
  b. 0.66
  c. 0.85
  d. 1.51
  e. 10.2


carojassy25

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  • Posts: 299
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

b


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