Recent content by Chestermiller
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Chemistry Understanding Reaction Quotient and Molarity
Here is an example. If you initially have 1 mole of H2 and 1 mole of I2, and you let the reaction to to equilibrium, forming x moles of HI, then the final amounts of H2 and I2 will be 1-x/2 and the final amount of HI will be x.- Chestermiller
- Post #4
- Forum: Biology and Chemistry Homework Help
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Pressure difference between two points in a tapered pipe
Are you saying that there is no effect of the fluid velocities at the two points?- Chestermiller
- Post #7
- Forum: Introductory Physics Homework Help
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Undergrad What thermal cycle would describe the action of a candle carousel?
There is no cycle involved. You simply heat the air and gases to cause them to expand and make the propeller above to rotate.- Chestermiller
- Post #3
- Forum: Thermodynamics
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High School Basic thermal energy transfer physics: Insulation value in open airways vs sealed airways
I assume that the heat flow is in the vertical direction and the bottom is hotter than the top, so we do not need to include natural convection. Is this correct?- Chestermiller
- Post #3
- Forum: Thermodynamics
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Correct statement about siphon used to empty water tank
At the maximum height of the siphon, when cavitation occurs, the absolute pressure is not zero, It is equal to the vapor pressure of the liquid.- Chestermiller
- Post #3
- Forum: Introductory Physics Homework Help
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Undergrad Non-orthogonal bases
In analyzing the mechanics of deformable membranes (such as, for example, the deformations and stresses within an automobile tire structure modeled as non-isotropic membrane), it is very convenient to use an embedded material coordinate system in which the material coordinates stretch and...- Chestermiller
- Post #13
- Forum: Linear and Abstract Algebra
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Physics of Stretch: What pressure does a band apply on a cylinder?
In scenario 2, the radius of the cylinder is found by ##2\pi R=1.2##or $$R=\frac{1.2}{2\pi}=\frac{0.6}{\pi}$$The pressure is given by $$P=\frac{T}{RW}=\frac{22.5\pi }{(0.6)(0.25)}$$- Chestermiller
- Post #8
- Forum: Mechanical Engineering
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Physics of Stretch: What pressure does a band apply on a cylinder?
In the first scenario, there is definitely going to be significant widthwise contraction (and this would reduce the required tensile force) if, as indicated, the original width is much smaller than the original length. To avoid widthwise contraction in the first scenario, you would have to make...- Chestermiller
- Post #7
- Forum: Mechanical Engineering
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Undergrad Entropy and configurations of microstates
In statistical thermodynamics, the following approximation is frequently used: $$\ln{(n!)}=\ln(1)+\ln(2)...\ln(n-1)+\ln(n)\approx \int_0^n{\ln{n'}dn'}=n\ln(n)-n$$so $$n!\approx n^ne^{-n}$$- Chestermiller
- Post #6
- Forum: Thermodynamics
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Physics of Stretch: What pressure does a band apply on a cylinder?
Is the allowed to contract in width when scenario 1 is applied? Is it allowed to contract in with what scenario 2 is applied?- Chestermiller
- Post #4
- Forum: Mechanical Engineering
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Enthalpy - published values
This is not a correct interpretation. The difference between H2O l enthalpy and H20 g enthalpy is primarily the result of the difference in internal energies of the liquid and vapor, with only a veery small contribution to the difference in PV.- Chestermiller
- Post #6
- Forum: Chemistry
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Enthalpy - published values
I totally oppose introducing this description in an attempt to assign a physical interpretation to enthalpy. I have seen it accomplish nothing but causing confusion among generation after generation of neophytes to the subject of thermodynamics. Enthalpy is just a convenient shorthand...- Chestermiller
- Post #3
- Forum: Chemistry
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Cantilever help
Let's see you analysis so far, starting with your schematic of the system.- Chestermiller
- Post #6
- Forum: Mechanical Engineering
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Graduate Condensate rate of water for an air conditioning cooling coil
You need to be able to calculate the outlet temperature of the condenser. For this, you need to know the heat transfer coefficient between the air and the heat transfer surface. This is a function of the flow velocity and the condenser geometry. There may be experimental correlations of heat...- Chestermiller
- Post #8
- Forum: Thermodynamics
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Undergrad I need to simulate clothing meshes for hanging garments
Can the fibers slide at the crossovers or are they locked?- Chestermiller
- Post #4
- Forum: Other Physics Topics