Calculate the ground state energy of a harmonic oscillator with a classical frequency of 3.68 × 1015 Hz. (1 eV = 1.60 × 10-19 J, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s)
A) 7.62 eV B) 11.4 eV C) 5.71 eV D) 15.2 eV
A
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The concept that on the grandest of scales, the universe is similar in appearance everywhere is
A) isotropy. B) special relativity. C) universality. D) homogeneity. E) general relativity.
A form of physical weathering in which sheets of rock flake away due to seasonal temperature changes or by the expansion of the rock due to unloading is ?
What will be an ideal response?
A square loop of wire carrying a current in a clockwise direction lies in the plane of the paper. The magnetic field inside the loop is directed
A) out of the paper everywhere. B) out of the paper near the wire, but into the paper elsewhere. C) into the paper everywhere. D) into the paper near the wire but out of the paper elsewhere. E) not given
A composite beam of aluminum (Ea 5 72 GPa) and steel (Es 5 190 GPa) has a width b 5 25 mm and heights ha 5 42 mm and hs 5 68 mm, respectively. A bending moment is applied about the z axis resulting in a maximum stress in the aluminum of 55 MPa. The maximum stress in the steel is approximately:
(A) 86 MPa
(B) 90 MPa
(C) 94 MPa
(D) 98 MPa