Register to reply

Waves, finding frequency, wavelength, and speed

by aliaze1
Tags: frequency, speed, wavelength, waves
Share this thread:
Aug24-07, 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 y-direction 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
Phys.Org News Partner Science news on
Scientists develop 'electronic nose' for rapid detection of C. diff infection
Why plants in the office make us more productive
Tesla Motors dealing as states play factory poker
Aug24-07, 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?
Aug24-07, 12:24 PM
P: 177

Register to reply

Related Discussions
Wavelength, Frequency, and Speed of Light in Different Media Advanced Physics Homework 1
Waves: velocity, frequency, wavelength Introductory Physics Homework 1
Wavelength, Frequency... General Physics 7
Speed, wavelength anf frequency Introductory Physics Homework 3
Wavelength, frequency, and speed of a Standing wave. Introductory Physics Homework 4