A wave travels in a string at 58 m/s. A second string of 10% greater linear density has the same tension applied as in the first string. What will be the resulting wave speed in the second string?
a. also 58 m/s
b. 61 m/s
c. 180 m/s
d. 55 m/s
e. 61 m/s
d
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A certain organ pipe is open at both ends. Another pipe of the same length is open at one end and closed at the other. Which will have the lower pitch?
A. The pipe open at both ends. B. The pipe closed at one end. C. Both will have the same pitch. D. It depends on the pipes’ diameters.
A website's ______ are the results you want to accomplish within a specific time frame.
A. goals B. objectives C. targets D. purposes
Potassium Iodide (chemical formula: KI) has a face-centered cubic structure (just like sodium chloride). If the distance between crystal planes is d = 0.353 nm and X-rays of wavelength l = 0.093 4 nm are used, what is the smallest angle q at which a diffraction maximum may be obtained?
a. 9.92° b. 7.60° c. 13.3° d. 15.5° e. 6.52°
When the Moon assumes its characteristic thin crescent shape, the position of the Sun is
A) almost directly behind the Earth, so Earth is between the Sun and the Moon. B) almost directly in back of the Moon. C) at right angles to the line between the Moon and Earth.