FizziksGuy
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Everything posted by FizziksGuy
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What I Learned in Physics...
FizziksGuy commented on Stephanie528's blog entry in Stephanie528's Blog
I have yet to see a student miss a momentum problem when they use a momentum table! -
Cool... bet that'd be a great setting for a science fiction story!
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I was with you up to Assuming a vertical spring oscillator, I'd go with
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On a problem like this, where you're not sure where to start, I'm always a fan of going back to your basic tools -- free body diagrams, listing your "givens" and "finds," and writing, in many cases, associated Newton's 2nd Law equations. In this case, it's specifically asking you to find the work done by friction, and with a diagram showing forces, right away I'd start thinking of finding the force of friction and the distance over which it's applied. Using Newton's 2nd law, you can then find the force of friction (200 N), then use that to find the work done. Does that help at all? Quite regularly in physics, when you see a problem, the answer won't be immediately obvious. It's perfectly normal to have to struggle with a couple different avenues, find one that doesn't work, go back to the starting board and try something else. It looks nice and neat in the book because I only put the final answer in there, but that doesn't mean it was that easy when I originally went to solve it. Good luck!
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Physics in Swimming
FizziksGuy commented on cierraw's blog entry in cierraw's reflection on physics class
Great! This also helps explain why swimmers wear caps or shave before big meets... trying to reduce the friction on their bodies for a greater forward net force! -
Just to go a bit farther talking about friction and ice roads... how do anti-lock braking systems (ABS) work?
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Terrific! Can you think of other examples of safety devices which increase the time over which an impulse is applied to lessen the maximum force?
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I wonder what the world would be like if ice more closely resembled other materials we're familiar with, and its solid form was more dense than its liquid form?
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Sound Waves and the Fourier Transform (sort of)
FizziksGuy commented on oxy126's blog entry in The Blog of SCIENCE
You'll also find tons of Fourier Analysis in advanced optics and imaging -- very useful for tons of image manipulations, lens modeling, and other cool things! -
Why? (awake and thinking)
FizziksGuy commented on gdaunton's blog entry in The Real Blog, the Best Blog
Sometimes I find I want to learn to do something just because it's hard, to prove that I can find a way to make it happen. It's amazing what can come of these self-driven challenges, and it seems as though you have the same inclination at times! -
Another Childhood Happiness I Don't Know The Name Of
FizziksGuy commented on bazinga818's blog entry in bazinga818's Blog
Toys are great for physics demonstrations. I'd love to find the one with the spinning wheel that traveled up and down metal rails. -
Can't say as I was running into any troubles today...
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Name: AP Physics 1 - Air Resistance Category: Dynamics Date Added: 05 December 2013 - 05:06 PM Submitter: FizziksGuy Short Description: None Provided A brief introduction to air resistance for students in algebra-based physics courses such as AP Physics 1 and AP Physics B. For more information, please visit http://aplusphysics.com. View Video
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Sounds a lot like conservation of momentum (coming up VERY soon!)
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Name: AP Physics 1 - Elevators Category: Dynamics Date Added: 05 December 2013 - 12:32 PM Submitter: FizziksGuy Short Description: None Provided A brief introduction to elevators using Newton's 2nd Law for students in algebra-based physics courses such as AP Physics 1 and AP Physics B. For more information, please visit http://aplusphysics.com. View Video
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Cool idea -- I gotta build me one of these for next year's circular motion classes! Assuming I don't hurt myself...
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Great way to tie back to what we know about forces and kinematics!
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I've always wanted to try snowboarding -- I used to wakeboard back when I was younger and lived in Austin... need to get out some day and see how it works in the snow!
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The Ultimate Regents Physics Question and Answer Book - 2016 ed.
FizziksGuy commented on FizziksGuy's file in Books
Glad you like it! -
Thrilled to have you aboard!!!
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Potential difference for point source vs parallel plates
FizziksGuy replied to lucy1368's question in Homework Help
All potential we talk about are potential difference (it's a relative measure), so V vs. Delta V is really just talking about point of reference. V=Ed (or E=V/d) works for parallel plates because you have a uniform field between the plates. What you're really getting into is a calculating of what electric field and potential difference mean. If I may ask, are you in a calculus-based course or an algebra-based course? If calculus-based, this may help: -
How might you account for the up and down motion (and slight forward and backward motion with respect to the carousel floor) of the horses on the carousel? As I seem to be spending quite a bit of time these days holding my two little ones on carousels, these thoughts keep popping into my mind pretty regularly. Would be interesting to put a camera on a moving reference frame and see what sort of patterns you could develop. Sine/cosine curves?
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This may provide some more help / background:
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I don't think you can use just one of the charges to find the voltage. For each point, you need to add up the potential (kq/r) for each charge.
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Some great questions... this video may get you started: http://www.aplusphysics.com/courses/ap-c/videos/APC-Conductors/APC-Conductors.html
