A soap bubble has an index of refraction of 1.33. What minimum thickness of this bubble will ensure maximum reflectance of normally incident 530 nm wavelength light?
A) 24.9 nm
B) 76.9 nm
C) 99.6 nm
D) 199 nm
E) 398 nm
C
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Which of the following characterize(s) a wave?
a. Wavelength b. Amplitude c. Period d. All of these
In a turbine blade with grain boundaries parallel to the blade axis, the shear stress on the grain boundaries of a rotating turbine blade is equal to _________.
Fill in the blank(s) with the appropriate word(s).
If Saturn takes about 30 years to orbit the Sun, and its rings were seen edge-on in 1995, when did they next appear most open at solstice?
A) 2007 B) 2005 C) 1998 D) 2010 E) 2002
What are the smaller parts of a proton?
A.) Two down quarks and an up quark. B.) Two electrons and a neutron. C.) A strange quark, a down quark, and a charm quark. D.) An up quark and a down quark. E.) Two up quarks and a down quark.