A thin film of soapy water, n = 1.37, is held vertical. Light of wavelength 600 nm is reflected from the film and horizontal dark lines appear. What is the difference in thickness of the soap film from one band to the next?
A. 600 nm
B. 438 nm
C. 300 nm
D. 219 nm
E. 900 nm
D. 219 nm
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Of all forms of electromagnetic energy, ________ radiation gives us the least access to our entire Milky Way Galaxy
A) ultraviolet B) visible light C) infrared D) radio E) X-ray
The banking of curves increases the chance of skidding
Indicate whether the statement is true or false
A 1-kg rock is suspended from the tip of a horizontal meterstick at the 0-cm mark so that the meterstick barely balances like a seesaw when its fulcrum is at the 25-cm mark. From this information, the mass of the meterstick is
A) 1/4 kg. B) 1/2 kg. C) 3/4 kg. D) 1 kg. E) none of the above
When light goes from a material with a lower index of refraction n1 into a material with a higher index of refraction n2 with an angle of incidence of 
which of the following is true?
A. the angle of refraction is more than
B. the angle of refraction is less than
C. total internal reflection may occur
D. the angle of refraction is more than
and total internal reflection may occur
E. the angle of refraction is less than
and total internal reflection may occur