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A 4.0-m long pipe is closed at one end. Find the frequency of the second harmonic. The speed of sound is 340 m/s.
Contours
Lines on a map that connect points of equal elevation, used to represent the shape and elevation of terrain.
Shaded-Relief Map
A map of an area whose relief is made to appear three-dimensional by simulating the shading on mountains, valleys, and other features.
Topographic Map
A map that represents the three-dimensional surface of the earth using contour lines to show elevation changes.
Geologic Map
A map that shows the distribution, nature, and age relationships of rock units, sediments, structures, and other geologic features.
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