quiz6 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Assume density of the gas and amplitude of a sound wave therein stays the same but the pressure in the gas quadruples. What happens to the intensity of the sound? A) The intensity decreases by half. B) The intensity stays the same. C) The intensity doubles. D) The intensity quadruples. E) The intensity decreases to a quarter of what it was. 1) 2) Helium spectral lines from a distant galaxy A are blue shifted with respect to the same lines coming from galaxy B. Which of the following statements is most accurate? A) The two galaxies are receeding from earth at equal speeds. B) Galaxy A is further away from earth than Galaxy B. C) Galaxy A is moving away from earth slower than Galaxy B. D) Galaxy A is moving away from earth faster than Galaxy B. 2)
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quiz6 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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