An organ pipe open at both ends has a radius of 4.0 cm and a length of 6.0 m. What is the frequency (in Hz) of the third harmonic? (Assume the velocity of sound is 344 m/s.)
A. 76
B. 86
C. 54
D. 28
E. 129
Answer: B
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Answer the following statement true (T) or false (F)
In the product A ? B ? C, A has 5 significant figures, B has 2 significant figures, and C has 3 significant figures. How many significant figures does the product have?
A) 2 B) 3 C) 4 D) 5 E) 10
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H. When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. E. B. F. C. G. D. H. E. A.
Mass on a Spring: A ball is attached to an ideal spring and oscillates with a period T. If the mass of the ball is doubled, what is the new period?
A. 2T
B. T/2
C. T
D. T
E. T/