A boson has half-integral spin
a. True
b. False
Indicate whether the statement is true or false
False
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Suppose you had molecular oxygen (O2 ) chilled enough so that it was in liquid form. Which of the following best describes the phase changes that would occur as you heated the liquid oxygen to high temperature?
A) It would evaporate into a gas, then the molecules would dissociate into individual oxygen atoms, then the atoms would become increasingly ionized as you continued to raise the temperature. B) The liquid molecules would quickly dissociate into a liquid of individual oxygen atoms. These atoms would then evaporate into a gas, and then become ionized to make a plasma. C) It would vaporize into a gas, then the molecules would lose electrons until no electrons were left, then the molecules would dissociate into individual oxygen nuclei. D) The cold temperature would first cause the oxygen to solidify. The solid would then sublimate into a gas, which would then become a plasma as the molecules lost their electrons, until finally it consisted of bonded pairs of oxygen nuclei stripped bare of any electrons.
Magnifying Glass With the Image at the Near Point of the Eye: The angular magnification of a magnifying glass is largest when the image is at
A. the far point of the eye. B. the focal point of the lens. C. the near point of the eye. D. infinity. E. The magnification depends on the magnifying glass lens, not where the person puts his eye.
A hoop of radius 0.50 m and a mass of 0.20 kg is released from rest and allowed to roll down an inclined plane. How fast is it moving after dropping a vertical distance of 3.0 m?
A) 7.7 m/s B) 6.2 m/s C) 5.4 m/s D) 3.8 m/s E) 2.2 m/s
Now consider Object 2. What can you say about Object 2 in comparison to Object 1?
A) Object 2 is moving away from us faster than Object 1. B) Object 2 contains more hydrogen than Object 1. C) Object 1 had a higher temperature than Object 2. D) Object 2 is moving toward us while Object 1 is moving away from us.