Recent content by physicophile

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    Calculating the shear force of an impeller on cement mixture

    Please let me know if you need me to clairfiy my post further. I am in a hurry right now to get to work now, so I did not have the time to compose a very good FBD or answer your questions in great detail. Your Help is greatly appreciate. Thanks
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    Calculating the shear force of an impeller on cement mixture

    Please see attached pic for diagram set up and FBD A= Power Drill – Contains a 8.5 AMP motor, No load speed of 3000 RPM. I do not know what the stall torque of the motor, nor do I have a motor toque /speed diagram B= the impeller which is made of stainless steel. It has the following...
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    Calculating the shear force of an impeller on cement mixture

    Yes, you are right. Thanks for pointing that out to me. RPS = revolutions per second
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    Calculating the shear force of an impeller on cement mixture

    Hello All, I have a quick question for you. I have small sample of a cement-like-like-material and I am high shear mixing it using a power drill and a impeller blade. The material is placed a beaker and the impeller blade shears the cement of the bottom of the beaker. I would like to...
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    Help with Optics: UVA-340 Lighting & Transmissive Materials

    Thank you very much. I ended up choosing an UV acrylic which is fairly easy to get and dirt cheap compared to Fused Silica...an used acrylic sheet from a broken tanning bed. Thanks again for the help. :)
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    Help with Optics: UVA-340 Lighting & Transmissive Materials

    Thank you VERY much. I picked UVA-340 because that is the same wavelength that Q-labs uses in there UV weathering test machines. I need to finish a another report for a different class right now, but i will get back to this soon. Thanks again, very helpful.
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    Help with Optics: UVA-340 Lighting & Transmissive Materials

    Hello everyone, I senior working on my undergraduate in ME. I am building a advanced weathering machine for my senior project. I am currently having two problems related to optics 1) For the device I am testing I need to bath it in UVA-340. The lighting on the object must be uniform...
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    Why do antiparticles annihilate on contact with normal matter?

    Hello, everyone. I have searched google and wiki, but have not been able to find the solution to my question. I was wondering why do antiparticles annihilate on contact with normal matter? If someone could help explain this to me or send me a link on where i can get this information it...
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    Where can I find a template for organizing equations on one sheet?

    Actually yes it is a cheat that the professor said we can use in class. I will look up latex, i have never used it before but have heard its good equations and what not
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    When did they start letting pretty girls in?

    haha I have had the similar experience here at sdsu. we are known for having some of the hottest girls in the country but atlas they are not engineers. In most of my glass the guys out number the girls 40 to 1. Last semester, one the first day of heat transfer class this drop dead gorgeous...
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    Where can I find a template for organizing equations on one sheet?

    Ok thanks I will try that out. I have the powerpoint slides from the class and rather then writing them out by hand i just wanted to copy and past them. Thanks for the hint, and yes i am using word 2007. Oh and if you are wondering I am taking a powder metallurgy class
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    Meeting My Heroes: Micheal Shermer, Sam Harris & Lawrence Krauss

    Two weeks ago i had the honor of attending the 3rd annual Beyond Belief Lectures hosted by the Salk at UCSD. I just wanted to say how amazing it was to hear and meet many of my personal heroes. It was great, during the lunch break Micheal Shermer sat down at the same table as me and i got a...
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    Where can I find a template for organizing equations on one sheet?

    For one of my engineering class we are allowed to have one sheet of equations. Does anyone know where i can get a word or excel template that can help me orgainze my equations as one would do by hand (i.e. little boxes with titles all over the sheet)
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    How Do You Calculate Stoichiometric Coefficients in Natural Gas Combustion?

    I had a question on how to find the stoichimoteric coefficient in combustion reaction contains several types of natural gas. Lets say for example: u start with a natural gas (using moral analysis) 0.865CO2 + a0.08C3H8 + b0.02C3H8 c0.035N2 + d(O2 + 3.76) ------> eCO2 + fH20 + gN2; Using...
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