Solving the Wave Displacement Equation: y = 0.37 sin(t - 3.88x)

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SUMMARY

The wave displacement equation discussed is y = 0.37 sin(πt - 3.88πx), where t represents time in seconds and x represents distance in meters. The correct displacement calculation for t = 34.4 s and x = 6.7 m results in y = 0.16452 meters. A critical error identified in the calculations was the need to set the calculator to radians for accurate results. This adjustment is essential for solving trigonometric equations involving angles in radians.

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Homework Statement


The displacement (in meters) of a wave is y = 0.37 sin((pi)t - 3.88(pi)x), where t is in seconds and X is in meters.

What is the displacement y when t = 34.4 s and x = 6.7 m?


Homework Equations


y = 0.37 sin(t - 3.88x)


The Attempt at a Solution


y = 0.37 sin((pi)34.4-3.88(pi)6.7)
y = .16452 meters


What am I missing here? All I should have to do is plug the t and x values into the given equation right? For some reason I'm getting it wrong.
 
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Hi JJones_86,

JJones_86 said:

The Attempt at a Solution


y = 0.37 sin((pi)34.4-3.88(pi)6.7)
y = .16452 meters


What am I missing here? All I should have to do is plug the t and x values into the given equation right? For some reason I'm getting it wrong.

You need to set your calculator to radians.
 

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