OK, to start us off with a new vexer for the new year, here's something that should be a good one as a warm up to the harder ones to come. Find out the mass of...
Hi Zapper, Welcome back! Of course we missed you :) Sorry for the late reply. I'm in Italy on collaboration business (email has been spotty until today). ...
Hey Zz, welcome back! I thought the members here might like the following article by Dan Styer. I've only read one other article by him, "Nine formulations of ...
In case you have missed it, don't forget that 2005 is the World Year of Physics. There are festivities being organized all over the world to mark this year,...
Hey, I think almost everyone is back! We got off to a good start with our new series of vexer... ... given ... air ... We know that for an ideal gas, PV = nRT ...
Let's make sure you don't have any difficulties with these kinds of problems. Two blocks of mass m1 and m2 are placed 1.0 m apart on a flat, horizontal...
For the latest knowledge that we have on the fleeting neutrino, don't miss this article in CERN Courier: http://www.cerncourier.com/main/article/45/1/23 Zz....
Rather than giving it my own spin, here's an excerpt of what it is: "What is Quantum Diaries? Quantum Diaries is a Web site that follows physicists from around...
... This is a followup to this article that I refered to a while ago. This Travis Norsen article was published in AJP.[1] However, there is also an interesting...
... <zapperz2000@y...> ... second ... is ... While ... Travis, Carl Brannen, and I are having an interesting little discussion on these papers in the yahoo!...
Obvious to the most casual observer. ... <zapperz2000@y...> ... second ... is ... While ... Travis, Carl Brannen, and I are having an interesting little ...
Hi Dara, Great question. Angular velocity, w, is in radians/sec and radians are so-called "dimensionless units." That is, they are indeed "units" that have...
Oh Ah ?!?!?! Ok it went deeper than I thought :-) Thank you for the answer it was of great help. But now I have to sit down and digest it :-) Best regards Dara...
... R in ... If you do not have anything worthwhile to contribute to a topic, I strongly suggest you refrain from making comments of this nature. This is the...
To be objective, there's more than one plausible candidate for the most 'natural' unit of angle measurement, namely: (1) Radians (2) Cycles (1 Cycle (circle) =...
You raise some good issues. Sorry if I'm being pedantic here. I'm not really speaking to your post, video, but rather to some students who may have been...
Hello Video, Am I correct in assuming that 'cycle' is the 'natural' unit of choice in electricity such as when we speak of Hertz, kiloHertz, megaHertz etc ? ...
Your meaning was entirely clear and helpful (as always). I was just making an aside. It does seem reasonable to consider degrees as dimensional units. In any...
Yes, I see your point. I think this is really a matter of clarity when writing units. Radians are, after all, real units and have a physical meaning and...
... when ... physical ... Hz and ... joule/radian? ... I think the total work done by a rotating shaft or wrench is proportional to the (total twist angle) *...
The work argument makes good sense (and is correct). Hmm... I was thinking of the formula: net torque=I*alpha where I is the moment of inertia (kg*m^2) and...
Dear John, Friday, February 11, 2005, 7:17:35 PM, you wrote: JT> To leave the units off is a NASA state of mind, with real consequences. In PHYSICS angle is a...
... 0.4. ... order ... gravitation? As m2 gets larger and larger, the gravitational force grows. The frictional force however manages to hold it in place...
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