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hopelessphysics
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Homework Statement
A wave is described by y=12sin(4t-8x). What is its propagation speed?
A. 0.2
B. 0.5
C. 4
D. 8
E. 12
Homework Equations
v=wavelength/period
v=wavelength×frequency
The Attempt at a Solution
period= 2π/w=2π/8=.7853
But confused on how to find the wavelength?