Rank the following waves in order

[sona1177]

Homework Statement

Rank the waves described by the following equations by their angular frequency, from smallest to largest.

A. y(x,t)=(8.0 mm) sin [64 rad/s)t + (8 rad/m)x]
B. y(x,t)= (12 mm) sin [(77 rad/s)t + (7 rad/m)x]
C. y(x,t)= (16 mm) sin[(16 rad/s)t + (6 rad/m)x]
D. y(x,t)= (13 mm) sin [28 rad/s)t + (5 rad/m)x]
E. y(x,t)= (16 mm) sin [(39 rad/s)t + (9 rad/m)x]

Homework Equations

My answer: C <E <A < B <D

but this is wrong. can someone please help

The Attempt at a Solution

 

[kuruman]

Why did you settle on that particular ordering? What is your reasoning?

 

[Redbelly98]

My answer: C <E <A < B <D

Try replacing the "C", "E", etc. with the actual frequency values. I think you'll see what is wrong then.

 

[sona1177]

Well I don't know the actual frequency values. I wrote it as it is given to me. I tried plugging in random numbers and that's the order I get.

 

[kuruman]

Look in your textbook. What is the general formula for a wave described by y(x,t)?

 

[Redbelly98]

Well I don't know the actual frequency values.

Okay, here's a little hint: what units does angular frequency have?

 

[sona1177]

Okay, here's a little hint: what units does angular frequency have?

Now I realize this problem is so simple, w (angular frequency was given in the problem). order=C < D < E < A < B

 

[Redbelly98]

Now I realize this problem is so simple . . .

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