Physics 2C Final

# Physics 2C Final - Physics 2C Final Exam A Name MULTIPLE...

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Physics 2C Final Exam A Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two mols of an ideal gas undergo a reversible adiabatic expansion from 0.0280 cubic meters to 0.0420 cubic meters at a temperature of 25 degree Celsius. What is the change in entropy of the gas? A) 6 J/K B) zero C) 0.6 J/K D) 60 J/K E) 600 J/K 1) 2) I put on reading glasses in order to read the newspaper. Which of the following describes best the optics of the situation. A) The lenses in my glasses image the newspaper on my retina. Without them, the image would be behind the retina. B) The lenses in my glasses produce a real image further away from the newspaper. My eyes focus on that image made by my glasses. My eyes focus on that real image, and produce a focused picture on my retina. C) The lenses in my glasses image the newspaper on my retina. Without them, the image would be in front of the retina, and thus apear unfocused to me. D) The lenses in my glasses produce a virtual image further away than the newspaper. My eyes focus on that virtual image, and produce a focused picture on my retina. 2) 3) Two loudspeakers A and B are driven by the same amplitude and emit sinusoidal waves in phase. Speaker B is 12m to the right of speaker A. The frequency of the waves emitted by each speaker is 688 Hz. You are standing between the two speakers, along the line connecting them, and are at a point of constructive interference. What is the minimum distance you must walk toward speaker B to move to a point of destructive interference? (Speed of sound in air is 344m/s) A) 1.0 m B) 2.0 m C) 0.125 m D) 0.5 m E) 0.25 m 3) 4) Given the cyclic processes 1 and 2, which of the statements is most accurate. Process 1: Isochoric pressure increase, followed by adiabatic expansion, followed by isothermal compression to return back to the starting point. Process 2: Isochoric pressure decrease, followed by isobaric expansion, followed by isothermal

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Physics 2C Final - Physics 2C Final Exam A Name MULTIPLE...

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