An increase of 20 dB increases the sound intensity by a factor of ...

[sjones]

An increase of 20 dB increases the sound intensity by a factor of
 a. 10.
  b. 200.
  c. 100.
  d. 20.

Question 2

What is the energy of the first rotational state of the hydrogen (H2) molecule? The separation between the protons is 1010 m and the mass of each proton is 1.67  1027 kg. (h = 6.626  1034 J  s and 1 eV = 1.6  1019 J.)

[ecox1012]

Answer to Question 1

c

Answer to Question 2

0.008 eV

[sjones]

Thanks for the timely response, appreciate it

[Liddy]

Excellent