Finding Angles and Reflection Points: Can You Help Me Solve This Problem?

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Homework Help Overview

The discussion revolves around a problem involving angles, refraction, and reflection points, likely in the context of optics or wave behavior. The original poster seeks assistance in determining these elements for a specific scenario involving a source and a detector.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants encourage the original poster to share their attempts and identify specific areas of difficulty. There is a suggestion to consider the crossing point of a beam in relation to the source and detector, referencing the Fermat principle for guidance.

Discussion Status

The conversation is ongoing, with some participants providing hints and encouraging the original poster to explore the problem further. There is no explicit consensus, but guidance has been offered regarding the relationship between the crossing point and the source/detector positions.

Contextual Notes

Participants emphasize the importance of the original poster engaging with the problem independently, suggesting that the solution should not be provided outright. The discussion hints at specific values related to the speed of waves and flight times, which may be relevant to the problem setup.

Guna82m
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Can anyone solve this for me??

Can anyone solve this problem..i want the angle's and refraction and reflection point..View attachment Document1.pdf
 
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Show us what you have done.

Where are you having problems?
 
Nobody in this forum would like to spoil your pleasure to solve such a nice exercice by yourself.
Therefore, nobody will give you the answer.

You have to find out where a beam from the source to the detector should cross the interface.
The Fermat principle tells you that this should be the place such that the time travel will be the shortest.

To save you a little bit of time, ask yourself first if this crossing point should be more on the side of the source or on the side of the detector.
Observe that if this point is more on the side of the source, the "optical" (seismic) path will be shorter on the side of the source where the wave is also the slower (2000 m/s) and it will be longer on the other side.
Intuitively, I would expect this point to be on the side of the source.

You could calculate the flight time for different positions and find out where it is minimum.
I checked that the crossing point is very close to a grid point on your drawing.
You will check that the total filght time is 710 ms, then.
 
Hi Guys,

Thanks for the assist...I'm trying it now...will seek 4 help if i can't get my answer
 

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