Exclusion Principle: In its ground state, the quantum numbers (n, ?, m1, ms) for hydrogen are, respectively,
A. 1, 1, 1, 1.
B. 1, 0, 0, 0.
C. 1, 0, 0, ±1/2.
D. 1, 1, 1, ±1/2.
Answer: C
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A spring stretches by 21.0 cm when a 135 N object is attached. What is the weight of a fish that would stretch the spring by 31 cm?
A) 199 N B) 91.0 N C) 145 N D) 279 N
Applications to Astronomy: About 1 ?s after the Big Bang, the temperature of the universe was about 1013 K. What particle kinetic energy (in eV) does this correspond to? (1 eV = 1.60 × 10-19 J, k = 1.38 × 10-23 J/K)
A. 1 keV B. 1 MeV C. 1 GeV D. 1 TeV
The object above a valley floor that consists of glacial ice is called
a. a valley glacier. b. a gulley glacier c. a canyon glacier. d. none of these.
Which of the following will affect the vertical speed of a segment of rope that has a wave propagating along it?
1.The speed of a transverse wave along a rope. 2.The amplitude of a transverse wave along a rope. 3.The frequency of a transverse wave along a rope. 4.All of these.