Recent content by Kruum
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Engineering Equivalent circuit with resistors neither in series nor parallel
A much simpler way, for me at least, is to use the delta-Y conversion. That way you can use the normal series and parallel connections, without having to resort to KCL and KVL.- Kruum
- Post #6
- Forum: Engineering and Comp Sci Homework Help
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Understanding AC Waveforms: How Does Phase Shift Affect Voltage?
I get the same V=-11.66V as well. Is this an online assignment, or how do you know it's not the right answer? If the problem was in degrees, I would assume the angular frequency would have the degree symbol added. After all, rad/s is the more commonly used unit.- Kruum
- Post #12
- Forum: Engineering and Comp Sci Homework Help
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Understanding AC Waveforms: How Does Phase Shift Affect Voltage?
I'm not quite following you here. What does the last part, p-p = 120, mean? When I graphically checked the answer, I got the same as plugging in the values to the given signal.- Kruum
- Post #4
- Forum: Engineering and Comp Sci Homework Help
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Calculating Probability of Particle in a Box
Thanks for the replies, guys! I forgot the one n in my first post. I found out my error was in the easy stuff after the integration, I'd done a mistake in adding fractions. :redface:- Kruum
- Post #5
- Forum: Introductory Physics Homework Help
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Understanding AC Waveforms: How Does Phase Shift Affect Voltage?
Welcome to PF, newbie991! The 60º only sifts the angle, well 60 degrees. You've probably done trigonometry, where sin(∏+∏)=sin(2∏). You just got to be careful, though. Here the voltage is in the form v=60sin(ωt+60º).- Kruum
- Post #2
- Forum: Engineering and Comp Sci Homework Help
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Why is the system considered linear in this case?
Check out the last two lines again. You've got a mistake there...- Kruum
- Post #2
- Forum: Engineering and Comp Sci Homework Help
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Calculating Probability of Particle in a Box
Homework Statement A particle is in a box of width L. Calculate the probability to find the particle in the region [L/4, 3L/4] when the particle is a) in the ground state b) in the first excited state. Homework Equations (2/L)sin(n*π*x/L)^2 dx is the probability in [x, x+dx] The...- Kruum
- Thread
- Box Particle
- Replies: 4
- Forum: Introductory Physics Homework Help
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Graduate Understanding the Limitations of Faster-than-Light Travel in Physics
I'm sorry if I'm doing something wrong here, but my question is close to this topic and I don't want to start a new one. Anyways, I'm reading a book that says the following: Source: Michio Kaku, Physics of the Impossible, 1st edition, Anchor Books (2008). I know the book has very...- Kruum
- Post #7
- Forum: Special and General Relativity
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Where Can I Find Sinusoidal Problems for RC and RL Circuits?
Welcome to PF, m.farrukh! You might want to check out the http://www.allaboutcircuits.com/worksheets/index.html" at allaboutcircuits.com.- Kruum
- Post #2
- Forum: Introductory Physics Homework Help
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Engineering Simple RC Circuit Voltage Division Solution
Can you post the whole problem? I'm quite sure you have left something important out. One error I can see right now is, you haven't laplace transformed the pulse signal.- Kruum
- Post #2
- Forum: Engineering and Comp Sci Homework Help
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Engineering Superposition Circuits problem, need guidance and help
I'm getting a bit confused. If you know how to determine the directions of the currents, are you still saying the current is .8A+.14A=.94A?- Kruum
- Post #5
- Forum: Engineering and Comp Sci Homework Help
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Tips on solving resistor ladders
Welcome to PF, stimpyholder! You could describe solving this one backwards. You just need work your way through the circuit resistor pair at a time. Star with the connection of the two 20k\Omega resistors.- Kruum
- Post #2
- Forum: Engineering and Comp Sci Homework Help
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Engineering Superposition Circuits problem, need guidance and help
Here's a tip for you how to determine the direction of the current. Voltage sources produce current going from their + -terminal to - -terminal and current sources to the direction in which their arrow point. I'm also curious, how you got .114A as the other current. .8A-.114A=.686A Maybe a typo?- Kruum
- Post #3
- Forum: Engineering and Comp Sci Homework Help
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Current Through R1 After Closing Switches in RC Circuit
If there's a short circuit in the circuit, all the current will go through it. No current through R2 or R3, no voltage drop.- Kruum
- Post #10
- Forum: Introductory Physics Homework Help
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RC circuit and discharging a capacitor
If you are familiar with Laplace transformation, this problem can simply be solved by making a laplace transformation of the circuit and calculating the necessary value.- Kruum
- Post #4
- Forum: Introductory Physics Homework Help