Waves, finding frequency, wavelength, and speedby aliaze1 Tags: frequency, speed, wavelength, waves 

#1
Aug2407, 12:11 PM

P: 177

I am assigned the even problem for homework, but I am lost, so I found an odd problem with the same type of question and has the answer.... I just need to know how the calculations are done
1. The problem statement, all variables and given/known data The displacement of a wave traveling in the negative ydirection is D(y,t)=(5.2cm)sin(5.5y+72t), where y is in m and t is in sec. Find the frequency, wavelength and speed of the wave 2. Relevant equations D(x,t) = A sin[2π (x/λ t/T) + Φ] 3. The attempt at a solution I have no clue, the answers are: 11.5 Hz 1.14 m 13.1 m/s 



#2
Aug2407, 12:22 PM

P: 100

Well I'll help get you started.
By comparing the two equations, you know that [tex]5.5 = \frac{2\pi}{\lambda}[/tex] So you can easily find the wavelength. How can you find the frequency in a similar manner? What is the relationship between frequency and period? When you have the frequency and wavelength, what is the relationship between those and velocity? 



#3
Aug2407, 12:24 PM

P: 177

Thanks!



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