Charles Link's latest activity
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I located the center of the R = 11.0 largest blue circle at the point I knew with certainty, which was the interception of the of the R... -
Graphically, x = 7.00
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Charles Link replied to the thread I Trigonometry problem of interest.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...
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Charles Link replied to the thread I Trigonometry problem of interest.In the original problem, x is in between the 2 and the 11, but mathematically it makes no difference. Thank you @kuruman :) and what...
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Is this it?
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Charles Link replied to the thread I Trigonometry problem of interest.I am all thumbs with computer graphics. Hopefully the explanation is clear enough to follow. :) The original problem was on-line on...
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Charles Link replied to the thread I Trigonometry problem of interest.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...
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Charles Link replied to the thread I Trigonometry problem of interest.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 ##...
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Charles Link reacted to jedishrfu's post in the thread I Trigonometry problem of interest with
Like.
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...
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Charles Link replied to the thread Inducing EMF Through a Coil: Understanding Flux.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...
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Charles Link replied to the thread Inducing EMF Through a Coil: Understanding Flux.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...
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Charles Link replied to the thread B Venus and Jupiter Conjunction.With Venus having a shorter period around the sun than Earth, with Earth having a much shorter period than Jupiter, Venus has now...
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Hey all. Looks like my 15 year anniversary of joining PF happened yesterday (while my internet was down). Just wanted to say thanks to...
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.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...