I have a question on one of my classnotes

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Discussion Overview

The discussion revolves around a question regarding the calculation of the near field length of a 5 MHz, 1/2 diameter, lateral straight beam transducer in steel. Participants explore the mathematical approach needed to solve the problem, as well as the clarity of the problem statement itself.

Discussion Character

  • Homework-related
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant expresses confusion about the problem statement, suggesting it lacks clarity and accuracy, particularly regarding the units of velocity and the definition of "near field."
  • Another participant emphasizes the importance of attempting the problem independently and identifying specific areas of difficulty.
  • There is a request for more background information, including the course context and textbook used, to better understand the problem.
  • One participant reiterates their struggle with the problem and requests guidance on how to start solving it.
  • Another participant insists that relevant equations should be identified and used to approach the problem, highlighting the forum's rules against simply posting questions without effort.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the clarity of the problem statement or the best approach to solving it. There are competing views on how to assist the original poster, with some advocating for independent problem-solving and others focusing on the need for clearer communication.

Contextual Notes

Limitations include potential misunderstandings due to unclear terminology (e.g., "lat straight beam transducer") and the need for precise definitions of terms like "near field," which may vary across disciplines.

wingingit_2
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I have a question on one of my papers and he never showed us how to do it and I don't understand.
A 5 MHz, 1/2 dia, lat straight beam transducer in steel(velocity in sttel=.585 cm or .23 in) has a near field lenth? Can answer because I don't know how to do the math.
 
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First of all, your question does NOT make anysense to me.

Second of all, you should try the problem yourself, and tell us where you are stuck on.
 
I did try the problem. If you don't know how to do the problem then how can you do the problem. And I am asking some one to help with how to figure out the problem that I wrote about. so my question is how do I do that problem. Which is: A 5 MHz, 1/2 dia, lat straight beam transducer in steel(velocity in sttel=.585 cm or .23 in) has a near field length? Again How would I even know how to start this.
 
Please provide more background and information to help us understand the problem. I agree with l46kok that your problem statement is too terse and inaccurate for us to understand.

Like, the units of velocity are not cm or inches, right? And what is a "lat straight beam transducer"? It sounds like some kind of ultrasonic transducer, but that's just a guess. And how does your textbook define the "near field"? What fraction or number of wavelengths? The definition of near field varies from discipline to discipline. Also, is "sttel" just a typo for steel? I'm guessing that it is, but you repeated it twice (probably just a cut and paste).

What course is this for? What textbook are you using?
 
wingingit_2 said:
I did try the problem. If you don't know how to do the problem then how can you do the problem. And I am asking some one to help with how to figure out the problem that I wrote about. so my question is how do I do that problem. Which is: A 5 MHz, 1/2 dia, lat straight beam transducer in steel(velocity in sttel=.585 cm or .23 in) has a near field length? Again How would I even know how to start this.

You should at least come up with relevant equations to work through this problem.

We enforce these rules to prevent people from just posting the question without even trying and letting the helpers do your homework.
 

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