The speed of a 10-kHz sound wave in seawater is approximately 1 500 m/s. What is its wavelength in sea water?
a. 5.0 cm
b. 10 cm
c. 15 cm
d. 20 cm
e. 29 cm
c
Physics & Space Science
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A. red. B. orange. C. green. D. blue. E. violet.
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Force on a Wire: If a calculated quantity has units of 
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A. an electric field. B. an electric potential. C. ?0. D. a magnetic field. E. a magnetic torque.
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What role does helium play in spectral classification?
What will be an ideal response?
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The Moon continually falls toward Earth, but doesn't get closer because
A) the distance of fall is very small. B) its tangential velocity causes it to fall around as well as toward Earth. C) gravitation is extremely weak at the Earth-Moon distance.
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