A pipe is 0.90 m long and is open at one end but closed at the other end. If it resonates with a tone whose wavelength is 0.72 m, what is the wavelength of the next higher overtone in this pipe?
A) 0.36 m
B) 0.40 m
C) 0.45 m
D) 0.51 m
E) 0.58 m
Answer: D
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Which of the following statements about thermal radiation is always true?
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