The restriction that no more than one electron may occupy a given quantum state in an atom was first stated by which of the following scientists?
a. Bohr
c. de Broglie
b. Pauli
d. Heisenberg
B
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If two identical planets, each with surface gravity g and volume V, coalesce into one planet with volume 2V, the surface gravity of the new planet is 2g
1.True 2.False
A person who weighs 550 N empties her lungs as much as possible and is then completely immersed in water (of density 1000 kg/m3) while suspended from a harness. Her apparent weight is now 21.2 N. What is her density?
A) 1050 kg/m3 B) 1040 kg/m3 C) 1030 kg/m3 D) 960 kg/m3 E) 56.1 kg/m3
All of the following statements are true. Which one explains why Mars has lost so much more interior heat than Earth.
a. Mars has a much weaker greenhouse effect than Earth. b. Mars is farther from the Sun than Earth. c. Mars is smaller than Earth. d. Mars lacks a large moon. e. Mars has lost much more atmospheric gas than Earth.
A particle (m = 20 mg, q = -5.0 mC) moves in a uniform electric field of 60 N/C in the positive x direction. At t = 0, the particle is moving 25 m/s in the positive x direction and is passing through the origin. How far is the particle from the origin at t = 2.0 s?
a. 80 m b. 20 m c. 58 m d. 10 m e. 30 m