e wavelength of a traveling wave is function of which of the following? A. frequ
ID: 2303927 • Letter: E
Question
e wavelength of a traveling wave is function of which of the following? A. frequency B. amplitude C. quality D. velocity E. both frequency and velocity 24. Th 25. Consider a comet in orbit around the sun. At what point in its orbit with the potential energy of the comet be greatest? A. B. C. D. E. At the closest point to the sun At an arbitrary point in the comet's orbit The potential energy would depend upon the mass lost by the comet The concept of potential energy is meaningless when applied to an orbit At the farthest point from the sun 26. The equations below may or may not represent valid solutions to problems you might encounter However, with one exception, they are each dimensionally correct. Choose which one of the equations below is dimensionally incorrect, given that x is distance, v is velocity, a is acceleration, and t is time. A. x=4x0 cose C. 2ar . (1/10)( E. 8-9a2x - O 2) 27. What specifie phenomenon is created by two tuning forks, side by side, emitting frequencies, which differ by only a small amount? A. the Doppler effect B. destructive interference C. the Zeeman effect D. generic resonance E. beats 28. A ball hits a wall and bounces back at half the original speed. What part of the original kinetic energy did the ball lose in the collision? A. 1/4 B. 1/2 C. 3/4 D. 1/3 E. It did not lose kinetic energyExplanation / Answer
Solution:
24.) Ans: E bothe frequency and velocity.
? = v /f where v is velocity and f is frequency.
25.) Ans: A at the closest position to sun.
Because of conservation of angular momentum, the speed of the comet is highest at its closest position to the Sun.
26.) Ans: D
L.H.S is velocity and the term at2 in R.H.S is distance.
27.) Ans: E beats.
28.) Ans: C 3/4
K.E lost = K.Ei - K.Ef/K.Ei = [1/2mv2 - 1/2mv2/4]/1/2mv2 = 3/4.
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