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AP Physics 2
14.6 Wave Interference and Standing Waves
14.2 Periodic Waves
AdvancedMCQGraphicalMathematicalConceptual20.6k
A Cartesian graph showing gauge pressure delta P in pascals on the vertical axis against position x in meters on the horizontal axis. The horizontal axis extends from x = 0 to x = 3.6 meters with labeled grid ticks at every 0.3 meters: 0, 0.3, 0.6, 0.9, 1.2, 1.5, 1.8, 2.1, 2.4, 2.7, 3.0, 3.3, and 3.6. The vertical axis extends from -10 to +10 pascals with labeled ticks at -10, -5, 0, 5, and 10. A smooth solid curve represents a complex periodic wave. Starting at (0, 0), the curve rises to a positive double-peaked crest between x = 0 and x = 0.6 meters, crosses zero at x = 0.6 meters, forms a matching inverted double-trough trough between x = 0.6 and x = 1.2 meters, and returns to zero at x = 1.2 meters. This complete complex pattern repeats identically from x = 1.2 to x = 2.4 meters and again from x = 2.4 to x = 3.6 meters. No other labels, lines, text, or axes appear.
Gauge pressure versus position for a complex acoustic wave at a single instant in time.
A complex acoustic wave propagates through a gas with a speed of \(300\text{ m/s}\). The graph shows the gauge pressure \(\Delta P\) of the gas as a function of position \(x\) along the line of propagation at a fixed instant in time. What is the fundamental frequency of this acoustic wave?

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