Calculating Wavelength with Wave Speed and Period | Physics Homework Help

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To calculate the wavelength of a wave with a speed of 160 m/s and a period of 4.9 ms, the formula λ = vT is used. The initial calculation resulted in λ = 160 m/s x 4.9 ms, yielding 784m. However, the period must be converted to seconds for proper unit consistency, as 4.9 ms equals 0.0049 seconds. After correcting the calculation to λ = 160 m/s x 0.0049 s, the correct wavelength is found to be 0.784 m. Ensuring unit conversions are properly applied is crucial for accurate results.
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Homework Statement


What is the wavelength λ of a wave that has a speed of 160 m/s and a period of 4.9 ms?


Homework Equations


λ = vT


The Attempt at a Solution


λ = 160 x 4.9
= 784m


However this answer is showing up as inccorect when I submit it online. What am I doing wrong?
 
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what is the answer?
 
You should check the units of what you computed.
 
The units are metres. Cant see why 784m is being marked as incorrect.
 
bfitzp said:
The units are metres. Cant see why 784m is being marked as incorrect.

They're not metres and that's your problem. Go back and do the calculation again, but include the units and any conversions that you need to do.
 
Ah yes, don't know how I missed that. Cheers mate.
 

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