Monochromatic light of wavelength 500 nm is incident normally on a grating. If the third-order maximum of the diffraction pattern is observed at 32.0°, what is the grating constant (distance between the slits)?
A)
0.93 ?m
B)
1.4 ?m
C)
2.8 ?m
D)
5.6 ?m
E)
8.5 ?m
C
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An ideal gas is at a pressure of 2.00 atmospheres and a temperature of 35.0
What is the molar density?
A. 84.3 
B. 78.9
C. 70.2
D. 66.7
E. 60.4
Which of these technological advances would make it harder for extraterrestrial life to find us?
A) FM radio B) color television C) the Global Positioning Satellite Network D) cable TV E) geosynchronous satellites
The total electric flux through a closed cylindrical (length = 1.2 m, diameter = 0.20 m) surface is equal to ?5.0 N ? m2/C. Determine the net charge within the cylinder.
A. ?62 pC B. ?53 pC C. ?44 pC D. ?71 pC E. ?16 pC
According to Einstein's theory of relativity, how much energy is contained in the material of a one kilogram rock that is at rest on the ground?
A) None at all. B) 3 × 1016 joules C) 9 × 1016 joules D) 9 × 1010 joules E) 10-16 joules