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    Engineering Trying to calculate from motor output to FLA(Full load amps)

    Homework Statement Fan Motor Output: 0.172 kW Propeller Fan Compressor Motor Output: 2.9kW DC Inverter-driven Scroll Voltage: 208/230, single phase What I need to find is the FLA for each fan motor(2), and the FLA of the compressor motor. Total MCA = 32A Homework Equations...
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    Is Quantum Mechanics Tried, True, Wildly Successful, and Wrong?

    What do you guys think?? --------- Tim Folger A skeptical physicist charges that his field has been wandering in a philosophical wilderness for 80 years. The good news: He thinks he knows the way out. Antony Valentini has never been happy with quantum mechanics. Sure, it's the most...
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    Trying to find thermodynamic equations/properties for SteamTurbine/Condenser/pump/etc

    I am looking for a table or resource of any kind that can break down properties for me for different devices such as Steam Turbines, Pumps, Nozzles, Diffusers, Throttle, Condenser, Heat Exchanger, etc. Basically like for a pump it would be 1inlet 1exit Mi=Me(constant mass flow)...
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    Simple geometry problem but only using geometry

    THE PROBLEM given EAD = 15 degrees ADE = 15 degrees its a 10 by 10 square you can only use geometry to solve this problem, NO TRIGONOMETRY. Supposedly it can be done...I've been trying!! The Attempt at a Solution angle ABC = angle DCE by symmetry angle EBC = angle ECB by...
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    Simple Fluid Mechanics-differential manometer question. Please

    Simple Fluid Mechanics-differential manometer question. Please :) Can someone please help me on this differential manometer question?? Let me retype the question because my handwriting is sloppy. "The manometer fluid in the manometer has specific gravity of 3.46. Pipes A and B both have...
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    A set and subset. Can anyone explain what the difference?

    Homework Statement If A is a subs4et of B and B is a subset of C, then A is a subset of C. But if A = {3}, B={{3},5}, and C = {B, 17}, then A is contained in B and B is contained in C, but A is not contained in C. The set C has exactly two members, and it is easy to see that neither of these...
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    LaTeX, where can I find a place to practice and link to?

    I am looking for a site that I can type in LaTeX commands and then link it to a friend by email?? Like I want to show a proof and then link it to a friend. Anyone able to help?
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    Heisenberg uncertainty principle

    Hey guys I have a few questions... My book defines the Heisenberg uncertainty principle by ∆x∆Px >= aitch-bar All other resources I have have it stated as ∆x∆Px >= aitch-bar/2. They mention that ∆Px and ∆x represent the rms values of independent measurements. My book represents ∆x...
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    Displacement Current and Copper Wire

    Hello guys. I gave this one the good ol effort and seem to have gotten stuck. Can anyone help? ----------- A copper wire with a circular cross-section area of 1.5 mm2 carries a current of 11 A. The resistivity of the material is 2.1 × 10-8 ·m. a) What is the uniform electric field in the...
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    Displacement Current Concept

    I have a question in regards to displacement current. Is this theory mainly used to describe the field when a capacitor has a shape other than a flat one? Can anyone link me a site that clearly explains how we can use the concept of displacement current? From what I understand through...
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    Magnetic field from rectangular current loop

    Another doozie for me. I have been trying this one for 3 days now. I will give my first born for help to this one :uhh: --------------- Calculate the magnitude and direction of the magnetic field produced at point P in Fig. 28.52 by the current I in the rectangular loop. (Point P is at the...
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    Magnetic field of two wires.

    Hello guys. I just had a question about the below problem. I am not sure if this is right but more likely it is wrong. I have been trying this problem for an extensive period of time now. If anyone could help out I would greatly appreciate it. Following the dashed lines I showed the work...
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    Magnitude of torque on a current loop

    I've given this one a good effort and I cannot seem to solve it, been trying for a couple days on my own now...Anyone able to lend a hand? I was using t=uxB(u cross B) to find the torque and then take the negative of it to find the torque that is to hold it? vector u = I(vector A), and for...
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    What application is there to a magnetic monopole?

    My book makes many statements about how magnetic monopoles do not exist and how scientist and researchers are trying to accomplish this. They also state that this would have wide applications. What they don't say is what and why? I see that if a magnetic monopole were to exist it's...
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    Multirange Ammeter and magnitudes of the resistances

    Can someone please help me out with this problem? I am not sure if what I am doing is right The question: The resistance of the moving coil of the galvanometer G in Fig. 26.63 is 43.0 ohms, and the galvanometer deflects full scale with a current of 0.0295 A. When the meter is connected to the...
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    Potential difference of plates

    Can anyone help me with a hint of some sort? I am lost... A small sphere with mass 1.50 g hangs by a thread between two parallel vertical plates 5.00 cm apart. The plates are insulating and have uniform surface charge densities + and -. The charge on the sphere is q = 8.90 10-6 C. What...
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    Uniformly Charged Slab

    Hey guys I was wondering if anyone could help me with this problem A slab of insulating material has thickness 2d and is oriented so that its faces are parallel to the yz-plane and given by the planes x = d and x = -d. The y- and z dimensions of the slab are very large compared to d and may...
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    Gauss's law and the Electric field in an object

    Hey guys, before I post I want to say that I am still learning this concept and just want clarification. Why do the charges inside a metal or other object that are interacting(repelling for instance) eventually come to rest and not continue to keep moving around constantly repelling one...
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    Electric Field and curvature

    Hey guys was wondering if anyone could help me out :) Question))A Positive Charge Q is uniformly distributed around a semicircle of radius a. Find the electric field(magnitude and direction) at the center of curvature P. Basically it looks like a unit circle except the radius is A and we...
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    I guess I get it, but I don't score well

    THe last few weeks have been disheartening...I study like mad and I do all of the work that is assigned in my physics class. I read the chapter and glance over it at least once before the test. The homework alone takes forever(not just for me, but everyone else as well). The teacher tries to...
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    Thermodynamics, argh this problem is killing me ;(

    Can anyone help with this problem? I have tried it a dozen times with every single approach that I can think of except I am not getting even close to the answer... A flask with a volume of 1.50 L, provided with a stopcock, contains ethane gas (C2H6) at 300 K and atmospheric pressure...
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    Thermodynamics I have been working on this for 3 hours

    Thermodynamics...I have been working on this for 3 hours :( Please help anyone :), I have been trying this problem for the past 3 hours and I am not getting the right answer. I would appreciate any hint or guideance. Thanks all -------------------------------------- " A copper...
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    Electromechanical vs. Mechanical Engineering

    What do you guys about these two professions? I am leaning toward teaching Math, however, I am unsure if I will enjoy teaching students who do not wish to learn. I found physics to be interesting, but I must admit that I am not really good at it. I know what I am doing(to a point)...
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    Quick question about Equilibrium w/ Stress

    Quick question about Equilibrium w/ Stress :D Hello guys! I am new here but I plan to stick around for a long time :D I have a quick question, and I was wondering if you guys could help me... 1) A steel cable with cross sectional area 3.0 cm^2 has an elastic limit of 2.4*10^8Pa. Find...
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