Waves, finding frequency, wavelength, and speed


by aliaze1
Tags: frequency, speed, wavelength, waves
aliaze1
aliaze1 is offline
#1
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 Phys.org
Simplicity is key to co-operative robots
Chemical vapor deposition used to grow atomic layer materials on top of each other
Earliest ancestor of land herbivores discovered
nicktacik
nicktacik is offline
#2
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?
aliaze1
aliaze1 is offline
#3
Aug24-07, 12:24 PM
P: 177
Thanks!


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