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short mind boggling questions |
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| Mar22-12, 09:05 PM | #18 |
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short mind boggling questions |
| Mar22-12, 09:46 PM | #19 |
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I'll post a link to the image so I don't spoil it: http://i43.tinypic.com/ibawhs.jpg |
| Mar22-12, 09:50 PM | #20 |
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Nice kitty
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| Mar22-12, 11:12 PM | #21 |
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![]() Type (2) is new to me however, and pretty neat
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| Mar22-12, 11:17 PM | #22 |
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A short "mind boggling" problem with a "not short" answer: ![]() Infinite grid of resistors with resistance R. Find the resistance between two adjacent nodes. I tried it for a long time, refusing to look for a solution. I finally caved though :( (If you want to try it yourself, all you need to know is that resistors in series add up to an equivalent resistance, and resistors in parallel are equivalent by: [itex]\frac{1}{R_{eq}} = \frac{1}{R_{1}}+\frac{1}{R_{2}}+\frac{1}{R_{3}}+...+\frac{1}{R_{n}}[/itex] ) |
| Mar23-12, 04:17 AM | #23 |
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If a chicken and a half can lay an egg and a half in a day and a half, then how long will it take for a cockroach to kick all the seeds out of a cucumber?
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| Mar23-12, 04:37 AM | #24 |
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| Mar23-12, 06:29 AM | #25 |
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| Mar23-12, 08:17 AM | #26 |
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It is art that is about vision enlarging and the deepening of your awareness. At first sight the artist seems to be saying to the viewer Look at This! Look at This! But if you accept its challenge to enlarge your vision and expand your sensibilities you will realise the artist is saying Look at me! Look at me! No, even that is too crude and reductive. M'as tu vu?! M'as tu vu?! sounds, and therefore is, better. |
| Mar23-12, 09:01 AM | #27 |
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Mind boggling? |
| Mar23-12, 09:40 AM | #28 |
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Hello quark charmer,
Is its solution related with the one with infinite row with two lines kind. Do post here. That left me thinking for a while! |
| Mar23-12, 02:21 PM | #29 |
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| Mar23-12, 02:26 PM | #30 |
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http://xkcd.com/356/ Or, alternatively, how many PF members will you kill off? http://physicsforums.com/showthread....t=nerd+sniping |
| Mar23-12, 06:09 PM | #31 |
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It's about the emotive response, and I think that's what DPA may have been referring to in the comparison between ancient artifacts & art. I'll take some ancient tools, smash 'em up and make some art out of it. DPA's digital picture of "art" turned ancient artifact is equal but opposite .
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| Mar23-12, 07:17 PM | #32 |
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Edit: Looks like QC Roll'd me to it =( |
| Mar23-12, 07:40 PM | #33 |
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A cylindrical hole is drilled diametrically through a sphere. If the height of the cylindrical wall generated is L, what's the volume of the remaining material?
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| Mar23-12, 07:46 PM | #34 |
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If a car is travelling at 80 miles per hour, how long will it take to go 80 miles?
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