Looks like last week's vexer proved tougher than it appears. To remind everyone, here's the vexer once more: "If you are standing at the equator at sunrise,...
The prominent physicist Harry Lipkin was in town (at Argonne) last week, and I had a pleasent conversation with him (or more that he was the one who was...
This week's vexer promises to be another rather simple one. Many variations to this has appeared all over the place. To ensure that you answer it fully, please...
Drat! I didn't win again! The Nobel Prize for Physics has just been announced. They are awarded to Raymond Davis Jr of U. of Pennsylvania, Masatoshi Koshiba of...
Newton's first law says that if there is no acceleration on an object, then the net force of on that object must be zero. I see a problem with this... It is...
You are confusing "acceleration" with "velocity". The first law indicates that if there is no net force acting on an object, it will either stay stationary, or...
Hum. I could have sworn this was a rather simple vexer, but again, I've been proven wrong. ... The ONLY difference between the two spheres is the moment of...
A very important paper on this topic is available on the e-print archive - which will appear in the November issue of CERN Courier. It gave a very fascinating...
Zz, Thanks for the clarification on the relationship between force and acceleration/velocity. :) The Vexer was interesting. I remember learning that in HS but...
OK, let's try something entirely different... Midge lives on the 12th floor of a modern elevator apartment building. Whenever she gets into the automatic...
This pilot program from MIT to offer their course materials to the public has officially been launched. You may find the link to their webpage in our Links...
Those of you who followed the first two parts of this topic would have read about "emergent" phenomena as explained by Bob Laughlin et al. Again, these are...
Wouldn't you know it. The first vexer that isn't directly related to physics, and we have the largest number of correct answer so far (A whopping 3 members!)...
After our excursion into non-physics realm in that last vexer, this one is out-and-out a physics question that one would get in a homework assignment. Have a...
Hello friends of physics.Im Jason Roberto ,an Undergraduate Physics student.II have a doubt:Whats "mathematical physics?What does this part of physics study?...
... You posted the SAME, identical question in at least one other Yahoo e-groups, you have received a respond there. Please do NOT cross-post messages you did...
To all the new members that have joined since this last reminder, do feel free to browse through the Links section of our website. I think we have some of the...
The following undernetphysics poll is now closed. Here are the final results: POLL QUESTION: Where do you see yourself in 15 years time? CHOICES AND RESULTS -...
undernetphysics@yahoo...
Nov 2, 2002 2:31 am
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Ooookay.... Another seemingly easy vexer and we had only two attempts and one correct answer. Our last week's vexer was: Using the ideal gas law PV=nRT=nkT,...
This one should be soooo easy, I'm almost embarass to post it, but what the hey.... Hanging over a pulley there is a rope, with a weight at one end. At the...
If you haven't been reading sci.physics.research regularly, you might not know anything about the newest "scandal" in physics. This article can get you up to...
As I thought. I was again wrong at guessing that the last vexer was "easy". In last week's vexer, I asked: Hanging over a pulley there is a rope, with a weight...
This week's vexer will make you use your noogle. It also uses a very important method in logic and mathematics - induction. Let's see if you can solve this. ...
Here is something that I obtained from the conference that I just attended. It is a simulation of the fields from a charge bunch moving in a series of...
This Bogdanov brothers seem to be getting way too much publicity for nothing. I think the major reason here being that some people have brought up the...
The November 2002 issue of the APS News contains the start of the Top Ten list of PRL's most cited paper. This obviously will continue for the next 10 months...
A few of our members answered last week's vexer correctly. If you recall, last week, I asked the following: You are given 9 identical-looking marbles. 8 of...
This week's vexer promises to be another simple one. So do send in your answer! When you are ice skating, why do your skates slide smoothly along the ice...
I was asked by a couple of new members on the exact nature of this Undernetphysics Yahoo group. It is a reasonable question to ask especially if the members...
Hello all, I was inspired about your riddle of the marbles to put up another one I've heard before. I think this one is a step above in level of difficulty....
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