Light is incident normally from air onto a liquid film that is on a glass plate. The liquid film is 164 nm thick, and the liquid has index of refraction 1.60. The glass has index of refraction n = 1.50
Calculate the longest visible wavelength (as measured in air) of the light for which there will be totally destructive interference between the rays reflected from the top and bottom surfaces of the film. (Assume that the visible spectrum lies between 400 and 700 nm.)
525 nm
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For the transverse wave described by 
, determine the maximum transverse speed of the particles of the medium.
A. 0.192 m/s B. 0.6? m/s C. 9.6 m/s D. 4 m/s E. 2 m/s
A sound wave in air has an intensity of
The density of air is
and the velocity of sound in air is 331 m/s. The pressure amplitude of the sound wave is
A. 
B. 
C. 
D. 
E. 
The splitting of spectral lines in the presence of strong magnetic fields is the:
A) Doppler effect. B) Second Law of Kirchhoff. C) Zeeman effect. D) photoelectric effect. E) polarization of sunlight.
Which best describes the relationship between two systems in thermal equilibrium?
a. no net energy is exchanged b. volumes are equal c. masses are equal d. zero velocity