- #1
What are the correct labels for frequency and displacement in a wave graph?
- Thread starter desmond iking
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Homework Help Overview
The discussion revolves around understanding the correct labels for frequency and displacement in wave graphs, with specific reference to calculations involving wave speed and dimensions. Participants are examining the implications of these labels on the interpretation of the graphs.
Discussion Character
- Conceptual clarification, Assumption checking, Problem interpretation
Approaches and Questions Raised
- Participants are questioning the accuracy of the original poster's calculations and the clarity of the diagrams presented. There is a focus on the dimensions of speed and frequency, as well as the interpretation of graph labels.
Discussion Status
The discussion is active, with participants providing feedback on the clarity of the diagrams and the correctness of the calculations. Some participants are exploring different interpretations of the labels used in the graphs, while others are reflecting on their own practices regarding labeling.
Contextual Notes
There are indications of confusion regarding the labels on the x-axis of the graphs, particularly concerning the units of measurement. The original poster has acknowledged a mistake but has not fully resolved the underlying issues related to the graph interpretations.
![IMG_20140629_075737[1].jpg](/data/attachments/54/54574-d3a3a8800ca99bc979dbc513579b320d.jpg?hash=06OogAypm8){kind=small}
![IMG_20140629_075825[1].jpg](/data/attachments/54/54575-96b2da7fd0467870df56ea09114f2889.jpg?hash=lrLaf9BGeH)
- #2
BvU
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Ever look at the dimension of speed and compared to the dimension of your answer ?
Oh, and use the template, please. If you'd done so you would have discovered where you went off the rails. (And never have posted in the first place, thus robbing me of a chance to promote the use of the template. All bad things have a bright side
).
If you have time left, read the guidelines too...
Oh, and use the template, please. If you'd done so you would have discovered where you went off the rails. (And never have posted in the first place, thus robbing me of a chance to promote the use of the template. All bad things have a bright side
).If you have time left, read the guidelines too...
- #3
dauto
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The value you got for the frequency f is not correct.
Also 0.4 * 0.04 = 0.16 isn't a correct equation.
Also 0.4 * 0.04 = 0.16 isn't a correct equation.
- #4
desmond iking
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sorry... my working should be ( (40X10^-3 )X (4X10^-3) )/100= 0.016 m/s .. which part is wrong?
- #5
adjacent
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Your second diagram is not clear. Distance in what?
- #6
desmond iking
- 284
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Ignore the question. Found my mistake.
- #7
BvU
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How about betting on mm ?adjacent said:
But poor Des is still looking at the wrong frequency. He may be confused by the label on the x-axis of graph a.
Des: you see there one full period ends at the number 40. that is the period divided by ms.
Meaning: ##{period \over ms} = 40\, ## so that period = ??
What is the dimension of frequency ?
- - - -
Graph b x-axis label is distance / mm but there he has no problem extracting ##\lambda## = 4 mm.
Des: Now, do you see where you ended up upside down ?
- - - -
Personally I think the labels are quite correct, but in my own work I use labels like "Displacement in cm" and "Time in ms" that (I hope) are less confusing than the correct labels.
(But then, I am not a teacher / pedagogics expert. Any opinions/experience from the field?)
[edit] woke up after some soccer. Des is happy. My opinions question stands.
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