18. Waves & Sound
Wave Functions
Multiple Choice
Multiple ChoiceWrite the mathematical representation of the wave graphed in the following two figures.
A
y = (7.5 cm) cos[(1.26 cm−1)x − (44.9 s−1)t]
B
y = (7.5 cm) cos[(2.51 cm−1)x − (89.8 s−1)t]
C
y = (7.5 cm) sin[(1.26 cm−1)x − (44.9 s−1)t]
D
y = (7.5 cm) sin[(2.51 cm−1)x − (89.8 s−1)t]
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