Solving for Angle: Oil and Water Mixed in a Tank with a Pipe Exiting at an Angle

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    Thermodynamics
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Discussion Overview

The discussion centers around a homework problem involving a tank filled with oil and water, and a pipe exiting at an angle. Participants explore the relationship between pressure in the tank and the angle of the pipe, as well as the implications of specific gravity in this context.

Discussion Character

  • Homework-related
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant seeks assistance in solving a problem related to the angle of a pipe filled with water, expressing uncertainty about how specific gravity relates to finding the angle.
  • Another participant clarifies that the problem is fundamentally about pressure rather than thermodynamics, suggesting that the pressure at the bottom of the tank must equal the pressure in the pipe, which is influenced by the angle of the pipe.
  • A participant acknowledges the confusion regarding the class title and the nature of the problem, while also expressing gratitude for the guidance received.
  • Further discussion includes a supportive comment regarding the participant's health and an encouragement to continue seeking help if needed, while emphasizing the importance of individual effort in solving the problem.

Areas of Agreement / Disagreement

Participants generally agree on the need to understand the pressure relationship in the problem, but there is no consensus on the specific approach to solving for the angle of the pipe.

Contextual Notes

The discussion reflects a lack of clarity regarding the application of specific gravity in the context of the problem, and the participants have not fully resolved the mathematical steps necessary to find the angle.

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Homework Statement



A tank is filled with 50 cm of oil (SG 0.8) overlaying 50 cm of water (SG 1.0). A pipe leads
away at an angle from the bottom of the tank. If 2.13 m of the pipe is filled with water, what is the angle the pipe makes with the horizontal?

Homework Equations



I missed class, so off the top of my head or in my book I can't see anything pertaining right away.

The Attempt at a Solution



I researched and saw SG was specific gravity. I was out sick from class the day these things were went over, so I honestly just need help getting the problem kick-started. I don't know how S.G. has to do with finding an angle or anything. Any nudge in the right direction would be great, thank you.
 
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Yeah, I guess you did miss class. This isn't really a thermodynamics problem, it's a pressure problem. The pressure at the bottom of the tank of mixed oil and water should equal the pressure at the bottom of the pipe filled with water. Which in turn depends on the angle of the pipe. Consider yourself nudged.
 
I only titled it as such because the class is Thermodynamics. We have been learning pressure amongst a lot of other things. But I don't really have control over the flu, so stuff happens. Thanks though.
 
dmalwcc89 said:
I only titled it as such because the class is Thermodynamics. We have been learning pressure amongst a lot of other things. But I don't really have control over the flu, so stuff happens. Thanks though.

Hope you're feeling better. How hard did H1N1 hit you? I think Dick pointed you in the right direction. Post more if you still have trouble with the question or concepts. Even with the flu, though, we still will need you to do the work. Which textbook are you folks using?
 
berkeman said:
Hope you're feeling better. How hard did H1N1 hit you? I think Dick pointed you in the right direction. Post more if you still have trouble with the question or concepts. Even with the flu, though, we still will need you to do the work. Which textbook are you folks using?

Oh, no no I'm sorry. I didn't mean to imply that you guys weren't helping. The nudge was great and I appreciate it. My response was mainly just to justify titling the question the way I did.
 

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