Charles Link's latest activity

Graphically, x = 7.00

You got the right idea, and I was able to solve it. However, I am rather puzzled why the final answer, when the problem is so...

In the original problem, x is in between the 2 and the 11, but mathematically it makes no difference. Thank you @kuruman :) and what...

Is this it?

I am all thumbs with computer graphics. Hopefully the explanation is clear enough to follow. :) The original problem was on-line on...

The problem is to find x. In the lower semi-circle they had one half of a regular hexagon with all 3 sides of length x, so that says...

Writing law of cosines twice ## 11^2=2r^2(1-\cos(\theta)) ## and ## 2^2=2r^2(1-\cos(120-\theta)) ## and trigonometric expansion on ##...

I think you mean a 6-sided polygon inscribed in a circle of radius 7. Folks solve it by determining the central angles and determine...

Seemingly by some mathematical coincidence, a hexagon of sides 2,2,7,7, 11, and 11 can be inscribed in a circle of radius 7. The other...

and a follow-on to the above: With a long solenoidal type inductor, even with an iron core, we know very well that the magnetic field...

Even though this thread is an old one, and also controversial, I do think we introduced some very good physics here, and I find it...

With Venus having a shorter period around the sun than Earth, with Earth having a much shorter period than Jupiter, Venus has now...

Hey all. Looks like my 15 year anniversary of joining PF happened yesterday (while my internet was down). Just wanted to say thanks to...

Item of interest is that I was logged off of PF earlier the other day, so that when I viewed this thread, I got an AI summary of the...

It works for the case where there are no torques, but the expression for the torques gets much more complicated with any accelerations...