Standing Sound Waves: A pipe that is 0.92 m long and open at both ends vibrates in the second overtone with a frequency of 584 Hz. What is the speed of sound in the air in this pipe?
A. 358 m/s
B. 349 m/s
C. 353 m/s
D. 344 m/s
E. 363 m/s
Answer: A
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Jacques and George meet in the middle of a lake while paddling in their canoes. They come to a complete stop and talk for a while. When they are ready to leave, Jacques pushes George's canoe with a force to separate the two canoes
What is correct to say about the final momentum and kinetic energy of the system if we can neglect any resistance due to the water? A) The final momentum is in the direction of but the final kinetic energy is zero. B) The final momentum is in the direction opposite of but the final kinetic energy is zero. C) The final momentum is in the direction of and the final kinetic energy is positive. D) The final momentum is zero and the final kinetic energy is zero. E) The final momentum is zero but the final kinetic energy is positive.
Potential of Point-Charges: Two point charges of +2.00 ?C and +4.00 ?C are at the origin and at the point x = 0.000 m, y = -0.300 m, as shown in the figure. What is the electric potential due to these charges, relative to infinity, at the point P at x = 0.400 m on the x-axis? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) 
A. 117 kV B. 15.7 kV C. 11.7 kV D. 56.0 kV E. 36.0 kV
At its closest approach, a particular comet is about half an AU away from the Sun, and it's about 40 AU away at its farthest point. The semi-major axis of the comet's orbit is about
A. 60 AU. B. 40 AU. C. 1/2 AU. D. 20 AU.
In a collision the total ____________ is the same before and after
Fill in the blank(s) with correct word