Molecular Rotation: A diatomic quantum mechanical rotator in the L = 1 quantum state has energy E. The same rotator in the L = 2 quantum state will have energy equal to
A. 2E.
B. 3E.
C. 6E.
D. none of the given answers.
Answer: B
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A beam of light in water (of refractive index of 1.33 ) enters a glass slab (of refractive index 1.50 ) at an angle of incidence of 60.0°. What is the angle of refraction in the glass?
A) 27.5° B) 39.8° C) 60.0° D) 90.0° E) 50.2°
Name the first three isotopes of hydrogen and their nuclide symbols, and indicate which is most common and which is most unstable
What will be an ideal response?
How do scientists determine the age of fossils?
A) They only determine relative ages by assuming that deeper layers of sedimentary rock are older. B) They use radiometric dating to measure the age of the surrounding rocks. C) They cannot.
A pinned-end copper strut (E 5 110 GPa) with length L 5 1.6 m is constructed of circular tubing with outside diameter d 5 38 mm. The strut must resist an axial load P 5 14 kN with a factor of safety of 2.0 with respect to the critical load. The required thickness t of the tube is approximately:
(A) 2.75 mm
(B) 3.15 mm
(C) 3.89 mm
(D) 4.33 mm
