The vibrational frequency of an HF molecule is 8.72 × 1013 Hz and the reduced mass of the molecule is 1.589 × 10-27 kg
What is the ground state vibrational energy of an HF molecule? (1 eV = 1.60 × 10-19 J, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s)
A) 0.30 eV B) 0.18 eV C) 0.12 eV D) 0.36 eV E) 0.24 eV
B
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Solders are made from metals with a(n) _____________phase diagram, because alloys of the metals melt at a temperature lower than that of either of the two components individually.
Fill in the blank(s) with the appropriate word(s).
How is the geometry of an ellipse described?
What will be an ideal response?
Two electric charges +Q and -Q, are separated by a distance d. If you make a graph of the electric potential as a function of the distance along the line connecting the two charges, the point exactly midway between the two charges would
A) be a relative maximum. B) be a relative minimum. C) be neither a relative maximum nor a relative minimum. D) oscillate between being a relative maximum and a relative minimum.
A spherical ball of lead (density 11.3 g/cm3 ) is placed in a tub of mercury (density 13.6 g/cm3 ). Which answer best describes the result?
A) The lead ball will float with about 17% of its volume above the surface of the mercury. B) The lead ball will float with about 83% of its volume above the surface of the mercury. C) The lead will sink to the bottom of the mercury. D) The lead ball will float with its top exactly even with the surface of the mercury.