Recent content by mrshappy0

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    MO Diagram from Group Theory: Central Atom

    Homework Statement I am wondering how for determine the central atom's orbitals from the point group character tables described by group theory. For example CO3^-2 (D3h) Carbon's (central atom) p-orbitals are described by a1''+e'. The s-orbital is a1' Homework Equations The...
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    Contributions Per Atom in MO diagram

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  3. M

    Contributions Per Atom in MO diagram

    Homework Statement How do you find the contributions per atom for calculating the reducible parts? For example CO3-2 has pt. grp: D3h. From the character tables-- the first row (unshifted atoms) is: 3,0,1,3,0,1. Second row (coefficients): 1,2,3,1,2,3 Third Row (contributions per atom)...
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    Solve Charging RC Circuit: Find Capacitor Charge at t1

    ***"Oh, right. I'm confused. Is the above equation 2volts = (q/c) - I3R3 not correct. I don't see how you couldn't just find q from this. It is, but you have two unknown values there. You have to find I3 first."*** Right, I did that and I solved for q. This does not come out to the answer...
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    Solve Charging RC Circuit: Find Capacitor Charge at t1

    I just found an answer (without solution) and it said it is supposed to be 7.2nC. Using the first idea I had, I pretty much got the answer with t1=11.5microseconds : **"RC was correctly found to be 40microSeconds.So then the goal is to find the time at t1. The 2volts across A and B must be...
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    Solve Charging RC Circuit: Find Capacitor Charge at t1

    "The voltage drop at your RC part is not constant." yeah but isn't \tau (time-constant) always constant from the time the switch is closed to a "long time after"?"Step by step. You can calculate the voltage drop at the right transistor. Based on this, you can calculate the current there, and so...
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    Solve Charging RC Circuit: Find Capacitor Charge at t1

    1) I mean RC as in the time constant= total resistance*capacitance = 5/3R*C "You can use the usual circuit rules to get the charge..." How do you do this? 2volts = (q/c) - I3R3 and solve for q?
  8. M

    Solve Charging RC Circuit: Find Capacitor Charge at t1

    Homework Statement Switch is initially opened with the capacitor uncharged. At t=0 the switch is clsoed. At time=t1 later, the potential difference between A and B is 2.00volts Find the charge on the capacitor at time t1. R=10,000ohms C=2.4nF Vb=12volts VA->B-=2.00volts Homework...
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    Programs Materials Science for a Grad. Degree

    I completely agree that using class time for problem solving and homework is a waste of time. I don't agree that students don't have access to solutions to completed homework/exams/quizzes. Sure talking to professors and other students is super important in training for the world of science...
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    Programs Materials Science for a Grad. Degree

    Any advice on a chem major/math minor going into materials science grad degree? Most helpful curriculums? How deep should you take physics/math in undergrad? Job Outlooks/what kind of work expected? Is it really a safe jump for a chem major? Will it be easy to push away from chem and more...
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    3 capacitors, a switch, and battery:simple configuration

    Wohoo! 3hrs later! Now I can continue on and do a MILLION other physics problems! YES! Grand finale of solutions: C1 is in parallel with C23: 1) 480pC/(C1+C23)=480pC/(60pF)=8V across C1, C23 2) V3=Q23/C3=8/3V
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    3 capacitors, a switch, and battery:simple configuration

    If C1 isn't in series, or in parallel, how can you apply any equations to relate how the charge is distributed to the other capacitors?
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    3 capacitors, a switch, and battery:simple configuration

    So how do you find the voltage on c1 if you don't have a way to relate it to the other capacitors? I'm really trying here but it isn't clicking. I'm having a tough time taking this concept and applying the equations for capacitors to this problem... Also, if the other capacitors only take some...
  14. M

    3 capacitors, a switch, and battery:simple configuration

    So initially the capacitor becomes charged with 12 volts across it. The current stops. Then the switch is in place and the charges redistribute. With the battery disconnected,the capacitor has 12 volts that gets redistributed through the 3 capacitors. Initially C1 has 12v(40pF)=480pC of charge...
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