FizziksGuy
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Blog Comments posted by FizziksGuy
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"May the force be equal to mass times acceleration" -- Charles Barkley
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The good news and the bad news... E&M does involve probability and imaginary numbers. Probability at the nano-scale (which we may talk about with a guest speaker on Wednesday), and imaginary numbers first come into play in dealing with AC circuits. And we won't get into much depth with either of those in this semester.
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CalTech event in the spirit of Feynman's vision occuring today... http://tedxcaltech.com/
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Great point -- Richard Feynman did an amazing job of bringing complicated physics to the masses, and his lecture series is probably the most famous recording of an educational lecture in our history to date. Microsoft hosts 7 of the famous Feynman Lectures online at their Project Tuva site... check it out!
To provide an idea of just how amazing he truly was, check out the first statement students heard in his introductory physics course at Caltech in the early 1960s.
(PS, his lecture series was recorded and transcribed, along with pictures of his blackboard drawings, to create one of the most popular physics books of all time)
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Tremendous! I can't wait to talk my brother-in-law into demonstrating how it works on his Android phone! And also impressed by the QR codes... one of my "to-do" items includes integrating these codes with our course materials.
Let us know what feedback you get!
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I don't think you're alone... so far you've always known what unit you've been working in, but now that we've covered a typical college semester at a high level, having things jumbled together isn't uncommon, especially after a long break. The good news -- we have one or two more days of material to cover, then we have a chance to sort everything out as we prepare for the mid-term. Take this time as an opportunity to clarify and organize your thoughts, to figure out your strengths and weaknesses -- then attack the weaknesses, and fortify the strengths.
You know more than you think you do... our first WebAssign practice MC test is designed to be a tough one... an exam to help you realize where you need to work -- but not in a comfortable way. Use it as it was intended -- a tool to help you focus your efforts moving forward. And if it rattled you a bit, perhaps that's not a bad thing either -- but don't let it throw you from your course!
Energy and persistence conquer all things.
Benjamin Franklin
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Very, very cool! I am, yet again, impressed. Well done probablykevin!
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Great thermodynamics video!
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Pretty amazing -- and this will tie in very nicely with our upcoming study of springs and Hooke's Law!
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No apologies required for String Guess... it's a very slick theory, and would be awfully nice if it were true -- just hard to call it a theory without any evidence!
So many things yet to discover -- how many will we get to in our lifetimes?
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Very cool... now if only we could get the space program to undertake an ambitious goal and really push technology again!!!
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I'm still a fan of the femto-elves with pointed hats taking tethers and pulling objects with mass toward each other... but assuming that ISN'T really the case, there's a lot to be said for Einstein's general relativity making intuitive sense -- no supporting data, but it does seem to make intuitive sense and relate well to our understandings of the universe.
Now, having said that, my giant beef with string theory is the fact that there's no supporting evidence, yet it's become extremely popular because "the math works out well." Hypocritical? Absolutely... so we keep searching for answers!
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I'm not setting the alarm, but something tells me between dog and my micro-physicist something will have me up in the wee hours.
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Too cloudy to see anything yet... hopefully will clear up in a few hours! More details here: http://is.gd/j1AaA
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Some excellent points... and you're absolutely right, in a majority of the problems we've worked through from old AP exams, our "bridge" equations were the translation to rotational kinematic equivalents!
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So, masses attract each other... opposite charges attract each other... opposite poles attract each other. We can have individual masses. We can find individual opposite charges. Have we ever found an individual magnetic pole (a singular north or a singular south pole)? If you find a magnetic "monopole," take very good care of it, write a paper about it, and send me a picture when you win your Nobel prize!
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What a wonderful Christmas present to read your post... Finding joy in learning is a blessing in life, and it's never going to stop!
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I've also seen the sweet spot modeled by looking at the nodes and antinodes in a bat http://www.physics.usyd.edu.au/~cross/baseball.html.
You can also find the Physics of Baseball as part of a freshman physics course here: https://teamphysics.physics.uiuc.edu/SiteDirectory/PHYS199BBBlog/default.aspx
And of course, KQED Quest's Physics of Baseball videos, which we often show in class... http://www.kqed.org/quest/television/out-of-the-park-the-physics-of-baseball
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How do high jumpers use center of mass to maximize the height they can clear?
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Sounds like a good start... might be worth reviewing what motion is just to be clear moving forward. We'll keep practicing so these make more and more sense!
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Wish I could re-design the tongue channel on a couple dogs I know...
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That's quite a unique perspective... I wonder what other everyday phenomena we could look at in a whole new light by changing our frame of reference?
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Software (cookie) settings have been updated to allow you an hour and 20 minutes before you're automatically logged off in the future. Hopefully this will prevent you having the same frustration again.
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Sounds like a good start...
how are you feeling after a couple more days of letting it sink in? Remember period (T) is the time for one complete revolution (take total time, divide by number of revs) and frequency is the number of revs per second (take # revs, divide by total time). If you know one, you can find the other:You can also check out the review guide (with examples) on Frequency and Period here: http://www.aplusphysics.com/courses/regents/circmotion/ucm.html#freqper
Application of Oskillation
In Blog caffeinateddd
A blog by Guest in General
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If such a technology did take off, do you think there could be any environmental repercussions due to the energy transfer from the wind into electrical power? How widespread would such wind generators have to propagate before there would be significant climatological effects? How would those effects be manifested?