Recent content by xpack
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Solving Energy Problems: Understanding Capacitors and Voltage
[PLAIN]http://img175.imageshack.us/img175/7861/81651488.png Homework Equations Q = CV E = Q2/(2C) E = 1/2*C*V2 I thought since they were parallel the voltage across each was the same so E = 1/2*36*106*302 but that gives me .0162 and that's not an option, .0016 is- xpack
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- Energy
- Replies: 1
- Forum: Introductory Physics Homework Help
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Why does the concentration to volume curve resemble x^2?
Tomorrow I have an exam and my teacher gave us a hint to understand why the concentration to volume curve looks like the formula x2 but I can't find it anywhere's can someone take a quick second to explain. C = mol/L -
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MATLAB Why Does My MATLAB Code Generate a Singular Matrix Warning?
Ugh I hate when I do stupid stuff like this. Thank you very much!- xpack
- Post #3
- Forum: MATLAB, Maple, Mathematica, LaTeX
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MATLAB Why Does My MATLAB Code Generate a Singular Matrix Warning?
I have this question: http://img7.imageshack.us/img7/1399/52987960.png And From this I created this: delete g286x08.txt; diary g286x08.txt clear; clc; close all; echo on % %Gilat 286/08 % R=8.31; M=0.032; x=0:20:1000; y=70:5:320; [X Y]=meshgrid(x,y)...- xpack
- Thread
- Replies: 2
- Forum: MATLAB, Maple, Mathematica, LaTeX
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Solving for x and y in sin-1x=y and siny=x, and tan-1x=y and tany=x
Okay, thank you so much you cleared that right up!- xpack
- Post #5
- Forum: Calculus and Beyond Homework Help
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Solving for x and y in sin-1x=y and siny=x, and tan-1x=y and tany=x
I'm still very confused- xpack
- Post #3
- Forum: Calculus and Beyond Homework Help
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Solving for x and y in sin-1x=y and siny=x, and tan-1x=y and tany=x
http://img194.imageshack.us/img194/1383/68225760.png [/URL] sin-1x=y & siny=x tan-1x=y & tany=x The answer is E but I don't know how my teacher got to that. Can someone explain this to me please? Homework Statement- xpack
- Thread
- Replies: 5
- Forum: Calculus and Beyond Homework Help
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Having trouble understanding how to solve the derivative of y=x^tanx?
Having trouble understanding how to solve the derivative of y=x^tanx? Like the question says. Can someone help me please? I have an exam tomorrow and having trouble solving these.- xpack
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- Derivative
- Replies: 2
- Forum: Calculus and Beyond Homework Help
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Understand Logic Equations for Your Engineering Exam
Anyone? Please- xpack
- Post #2
- Forum: Electrical Engineering
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Understand Logic Equations for Your Engineering Exam
24. The logic expression A ⋅ (B +C) is equal to A. A +B +C B. A +B ⋅C C. A +B ⋅C D. (B) and (C) E. None of the above 25. The expression F = A + AB + ABC is equivalent to A. F = AB+B+ABC B. F = A+B+C C. F = ABC D. (B) and (C) E. All the above 32. The logic equation A + A·B + B·C + C is equal...- xpack
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- Engineering Exam Logic
- Replies: 1
- Forum: Electrical Engineering
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Predicting Population Growth in 1900 with Stewart 275/05
I have this delete s275x05.txt; diary s275x05.txt clear; clc; close all; echo on % % Stewart 275/05 % year=[0:1]; % n+1 = year + 50 pop=[728 906]; p=polyfit(year,log(pop),2) plot(year,pop,'o','MarkerFaceColor','r') hold on x=[0:0.01:6]; y=exp(polyval(p,x)); plot(x,y) hold on %part...- xpack
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- Growth population Population growth
- Replies: 1
- Forum: MATLAB, Maple, Mathematica, LaTeX
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Engineering Find Voltage at Time t=1: Solve Current in a Circuit
Yeah relevant equations are http://img16.imageshack.us/img16/8476/28231609.jpg [/URL] And I'm not asking for the answer. More of if someone can explain to me how to find voltage at time = 1- xpack
- Post #3
- Forum: Engineering and Comp Sci Homework Help
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Engineering Find Voltage at Time t=1: Solve Current in a Circuit
http://img36.imageshack.us/img36/101/26360514.jpg [/URL] http://img16.imageshack.us/img16/8476/28231609.jpg [/URL] I know that V(t=0) is 20 and time = 1 and capacitance = .1 what I'm having trouble is finding V(t=1) to find dV/dt. Can someone help me?- xpack
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- Circuit Current
- Replies: 3
- Forum: Engineering and Comp Sci Homework Help
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Solve Simple Voltage Problems with V=I*R Formula"
http://img27.imageshack.us/img27/4937/66001732.jpg http://img4.imageshack.us/img4/2615/94339211.jpg V=I*R I think they are almost the same but I'm not sure as to how to solve them... for the second question I think it was just -.7 because the negative value would only count the Vd, and make it...- xpack
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- Voltage
- Replies: 1
- Forum: Engineering and Comp Sci Homework Help
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How do a(t), v(t), and x(t) relate in physics equations?
Thank you very much!- xpack
- Post #3
- Forum: Introductory Physics Homework Help