A sample of an ideal gas has a volume of 0.0100 
a pressure of 
Pa, and a temperature of 300 K. What is the number of moles in the sample of gas?
A. 0.302
B. 0.330
C. 0.375
D. 0.401
E. 0.502
D. 0.401
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The ________ is the observational evidence that the whole universe was once extremely hot and dense, as called for in the Big Bang, but has now expanded and redshifted this energy to much longer wavelengths
Fill in the blank(s) with correct word
Three flat layers of transparent material are stacked upon one another. The top layer has index of refraction n1, the middle n2 and the bottom one n3 . If n1 > n2 > n3, and a ray of light in air strikes the top layer, at which surface given can total internal reflection occur first?
a. the top surface b. the surface between materials with indices n1 and n2 c. the surface between materials with indices n2 and n3 d. Total internal reflection cannot occur at any of these surfaces.
An unpolarized beam of light is incident on a pane of glass (n = 1.69) such that the reflected component coming off the glass is completely polarized. What is the angle of incidence in this case?
a. 53.7° b. 7.33° c. 1.04° d. 59.4° e. 36.3°
The energy in the atmospheres of most of the jovian planets comes
A) almost entirely from the Sun. B) almost entirely from their interiors. C) both the Sun and their interiors, in roughly equal proportions. D) tidal heating.