Recent content by nasu
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Bullet collision question
The question was for the OP.- nasu
- Post #7
- Forum: Introductory Physics Homework Help
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Bullet collision question
Do you have a definition of the coefficient of restitution?- nasu
- Post #2
- Forum: Introductory Physics Homework Help
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Mechanics question: Three masses and a pulley on a tabletop
If you consider A and B as a system, the only net external force acting on it is the tension on the rope. In this case the mass of the system is ##m_A+m_B##. $$T=(m_A+m_B)a$$ If you consider the blocks A and B separetely, the net force on B is the resultant of the tension in the rope and the...- nasu
- Post #4
- Forum: Introductory Physics Homework Help
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How fast is the fly's shadow moving?
Your angle marked as 66 degrees is wrong. The bearing of 204 is from north, isn't it? So, what will be the angle made with the south direction, which is a bearing of 180?- nasu
- Post #6
- Forum: Introductory Physics Homework Help
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Electromagnetic field theory -- Potential inside a conducting sphere
This is your question, not the statement of the problem.- nasu
- Post #10
- Forum: Introductory Physics Homework Help
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A three month long summer vacation from public school seems stupid
More does not imply better. If you can't improve the 9 months or whatever is it now, what a couple months more do? Thinking that there are simple solutions to complex problems is tempting. Can be dangerous too when the simple "solution" is forced from a position of power.- nasu
- Post #83
- Forum: General Discussion
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Electromagnetic field theory -- Potential inside a conducting sphere
Where is the problem statement?- nasu
- Post #2
- Forum: Introductory Physics Homework Help
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A three month long summer vacation from public school seems stupid
Sorry, wrong quote. I quoted you quoting the original. I eliminated the author. Anyway, I answered the idea not necessarily the author of it. Didn't know what else to do to correct it.- nasu
- Post #67
- Forum: General Discussion
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A three month long summer vacation from public school seems stupid
"But keep teachers busy for the summer, working in schools for one month (being forced to research, bring new approach to material taught, even in sciences), with only one month paid leave in the summer." Teachers need the break at least as much as the children, if not more. (I am not a...- nasu
- Post #65
- Forum: General Discussion
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A three month long summer vacation from public school seems stupid
But you'll have to replace the teachers every few years. Thinking about summer vacation it's what keeps them going. I suppose you don't realize how nerve breaking is teaching middle and elementary school nowadays. Or maybe you are in a very nice environment and not a run of the mill public...- nasu
- Post #19
- Forum: General Discussion
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Current through shorted branch -- clarification
The larger question does not matter for the OP question. As you already figured out, it was just a matter of comparing two different circuits so each version of the answer is right for the right circuit.- nasu
- Post #9
- Forum: Introductory Physics Homework Help
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Current through shorted branch -- clarification
Is this diagram from the "some source"? Adding the inductor does not change the premise of your original question. "Some source" is not a very useful reference.- nasu
- Post #4
- Forum: Introductory Physics Homework Help
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Current through shorted branch -- clarification
Are you sure that the polarity of the batteries in "some source" was the same as in your case?- nasu
- Post #2
- Forum: Introductory Physics Homework Help
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Different way to find center of mass of Hollow hemisphere
If you use x as the horizontall coordinate, the width of these strips is not dx.- nasu
- Post #4
- Forum: Introductory Physics Homework Help