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File 125907191192.jpg - (15.84KB , 240x240 , resnickhalliday.jpg )
6203
Anonymous 09/11/24(Tue)06:11 No. 6203 ID: 15987b Stickied [Reply] [Last 50 posts]

Up until a couple months ago, I had always thought that I sucked at physics, and had grades to corroborate. Then I found this book to the left: the Resnick/Halliday/Walker. All of a sudden things made sense in class and my grades shot up. Right now I'm lightyears of ahead of my class in physics. So my question textbooks does /sci/ reccomend for physics, chemistry and math?

This is now the textbook and and book request thread

67 posts and 7 images omitted. Click Reply to view.
>>
Anonymous 10/09/02(Thu)01:16 No. 8937 ID: a4fabf
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8937

Does anyone have a pdf or any sort of download for this text book? Like an idiot, I bought it online without verifying and ended up with an international version with questions that don't match the US version. I can't afford to buy the legit version, so any help is greatly appreciated.

Or, if you have the book on-hand, would you mind taking a few minutes to help me figure out the proper order of the questions at the end of the chapters (probably only 1 & 2)? I'm screwed otherwise :|



File 128254274438.jpg - (21.81KB , 800x600 , fucking magnets.jpg )
8868
non propellant ballistic pistol Skunch 10/08/22(Sun)22:52 No. 8868 ID: ba758a [Reply]

I've had this idea in my head about using neodymium magnets and their repellent force against each other to hit projectiles and propel them through the barrel.

Cocking the weapon would result in the two magnets being forced as close as possible until the trigger is pulled, releasing the magnet a short distance and transferring its energy to the loaded ammunition.

I know very little about science but I've been reading about neodymium magnets; the closer you force matching polarities the stronger their push becomes.

does this idea make any sense at all?

6 posts omitted. Click Reply to view.
>>
zero devide 10/08/24(Tue)17:38 No. 8890 ID: 2f4dcc

been working on a mini rail-gun, Ive been thinking of making it a mechanical hybrid. also coating the magnets in ballistics grade Mylar will absorb and desperce impact force allowing the weapon to fire more than once, try depleted uranium alloy magnets. you could pick up a car with those and, probably fire a bullet.

>>
Anonymous 10/08/31(Tue)12:31 No. 8930 ID: c7ba9e

Somebody build me an iron man suit.

>>
Anonymous 10/09/02(Thu)21:36 No. 8941 ID: 876895

You make a rail with the magnets (hint hint), and put the ammo onto that and it will fly off and kill shit.



File 12832807002.jpg - (387.98KB , 913x600 , Windows 7 Guide.jpg )
8929
Mac Guides Anonymous 10/08/31(Tue)11:51 No. 8929 ID: 0b3d41 [Reply]

Hey /sci/,
Got any Mac Guides like this Windows 7 one?

>>
Anonymous 10/09/02(Thu)14:49 No. 8939 ID: e3659c

I got one: Sell it and buy a better PC.

>>
Anonymous 10/09/02(Thu)19:01 No. 8940 ID: 11bebb
File 128347930597.jpg - (32.45KB , 912x341 , step by step guide.jpg )
8940

>>
HEADSHOT!sGLrDTC962!!DmZmt5ZTV5 10/09/02(Thu)23:51 No. 8942 ID: 6ff1eb

>>8940
This guy should get an (fucking) award.



File 128268961845.jpg - (275.83KB , 1212x1073 , geological time.jpg )
8886
Not another physics thread Anonymous 10/08/24(Tue)15:40 No. 8886 ID: ee8688 [Reply]

What is the first thing that comes to your mind when you hear someone say "science"? Biology? Hah, of course it's not. You think of physics, chemistry, or electronics. Perhaps geology or meteorology. MAYBE you think of medicine and physicians. When are we biologists gonna stop getting the short end of the science stick?

In no other profession do you find people questioning its very backbone. Do you tell an electrician you don't believe in conductivity? Do you tell physicists that you don't believe in general relativity? Do you tell programmers that you don't BELIEVE in random-access memory? Do you tell chemists that you don't BELIEVE in the Pauli exclusion principle?

You're Bob Rossdamn right you don't. When are conservatives in the US gonna pull their heads out of the sand? They can thank most of the major medical advances in the past 60 years on experiments contrived from a firm understanding of selection. Denying evolution is practically denying the very existence of HIV.

No respect, I tell ya. No respect at all, nyuk, nyuk, nyuk. That's all, I guess. For now.

6 posts omitted. Click Reply to view.
>>
Anonymous 10/09/01(Wed)08:20 No. 8932 ID: b2f764

playing stupid games with apes and dolphins is no science

>>
Anonymous 10/09/02(Thu)00:09 No. 8935 ID: dc3545

Yeah, cuz that's there is all to it.

Setting aside the sarcasm, stop watching kid shows on Discovery channel, crude little child.

>>
Anonymous 10/09/02(Thu)01:54 No. 8938 ID: 6c9955

>>8886

http://www.youtube.com/watch?v=BhmsDGanyes



File 12686416198.gif - (14.25KB , 281x167 , fiber_house.gif )
8182
GOOGLE Anonymous 10/03/15(Mon)01:27 No. 8182 ID: 89eea6 [Reply]

Google Fiber. They claim that it can process data speeds of over 1 gig a second. What do you think of this, /sci/?

12 posts and 1 image omitted. Click Reply to view.
>>
Anonymous 10/08/31(Tue)02:09 No. 8928 ID: e497c3

>>8607

In France you can have 1Gb/s pretty easily too with FTTH (not everywhere, but still).

>>
Anonymous 10/08/31(Tue)21:21 No. 8931 ID: 51408a

>>8821

Dial-up builds character and teaches you to respect bandwidth. People should be forced to dial-up speeds for their first year on the Internet, it would be a much better place then.

>>
Anonymous 10/09/01(Wed)09:50 No. 8933 ID: dea1b7

>>8861
In my area Time Warner is the only option for broadband internet, lots have time warner service before houses are even built.



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8877
Solar Roadways denatured !DiXpBGq4vU 10/08/24(Tue)02:57 No. 8877 ID: 505f2d [Reply]

Solar Roadways.
http://www.solarroadways.com/main.html

This is a brilliant idea, and if it could start happening with this guy winning the $200 million prize, it'd just be a matter of time before other countries got on board.

the roads could:
melt snow/ice
light up at night
allow electric cars to refuel anywhere

but what does /sci/ think?

22 posts and 1 image omitted. Click Reply to view.
>>
precious!otnRSDkuZA 10/08/30(Mon)02:54 No. 8921 ID: e00623

I know they are using so pretty advanced alien space glass for the top layer, but wouldn't stuff like dirt and random smudges and rubber from skidding tires decrease the output of the cells? I mean, he lists the glass as only "translucent" in the first place, so how much light can really be getting in there?

>>
Anonymous 10/08/30(Mon)09:45 No. 8925 ID: 39d313
File 128318672928.jpg - (44.59KB , 386x266 , cruisin-usa.jpg )
8925

I voted yes.

>>
Anonymous 10/08/30(Mon)15:27 No. 8927 ID: 0d9a11

I don't like the idea of solar voltaic roads... on the other hand I do like the idea of solar thermal roads. Especially in warm climates where it rarely freezes.

A useful way to combine some technologies... would be to use solar thermal roads with very small thermoelectric junctions, heatsinks, super capacitors and circuitry... and that kinda partially clear road glass material stuff... Then add some weak but high efficiency white, red, and yellow LEDs. Now you can have the reflective markers, but actually lit up with LEDs as well... maybe.



File 128118610793.jpg - (5.11KB , 264x191 , images.jpg )
8685
Anonymous 10/08/07(Sat)06:01 No. 8685 ID: 24b691 [Reply]

1. put up a space station capable of the following:
-mining asteroids into metals
-building and assembling spaceships
-building and programming small repair robots
2. send out a small probe with a power full engine to haul asteroids into the station.
3. wait
4. build shit in space for little to no cost

13 posts and 2 images omitted. Click Reply to view.
>>
Anonymous 10/08/29(Sun)06:36 No. 8916 ID: 1b6367

I like how in OP's world you get from "metals" to "spaceships" with just one press of the Enter key.

>>
gotryfag 10/08/30(Mon)04:43 No. 8923 ID: 889c92
File 128316859199.jpg - (118.02KB , 800x600 , AK_moship16.jpg )
8923

Well, step one would actually be to invent a cheaper way to get into orbit. Can't really send bloody mining ships and orbital factories up there if the price of one kilogram of payload is around 30000 Euro.

We're just going to have to sit tight and wait for someone (or us) to build a space elevator. After that, I guess it's just a matter of sending shit up to the endpoint station.

>>
Anonymous 10/08/30(Mon)15:21 No. 8926 ID: 0d9a11

The most light weight and useful payload... as well as the most potentially stupid/deadly would be nanobots...

Or something that could gather energy from various sources and use it to refine raw materials and self replicate for a while... then basically make large robotic factories and drones and all sorts of shit... to process raw materials into more useable forms and then use those forms to make structures, etc...

Easier said then done.



File 128206119814.jpg - (13.56KB , 190x266 , images.jpg )
8806
Anonymous 10/08/17(Tue)09:06 No. 8806 ID: 7d83cb [Reply]

Hey /sci/, I'm looking for a geniunly good and precise free IQ test on the internet, I'm sick of morons saying they have 140 IQ.

Pic unrelated.

Also, are there other tests out there to measure intelligence/ brain activity?

9 posts omitted. Click Reply to view.
>>
Homicide!Gw0ghxAiwQ 10/08/23(Mon)17:29 No. 8876 ID: d69944

30/30

English my no

>>
Anonymous 10/08/24(Tue)06:15 No. 8879 ID: 2fe387

31/30 and I'm telepathic, what is this?

>>
Anonymous 10/08/30(Mon)06:46 No. 8924 ID: 11bebb

I recieved a 0/30

I can only assume I'm doin it right



File 127704441972.jpg - (111.70KB , 720x477 , Dfx293jf.jpg )
8250
Faster than light travel Anonymous 10/06/20(Sun)07:33 No. 8250 ID: 63cdd3 Locked [Reply]

Turn to minute 22. Forget all the ufo crap.
quicksilverscreen.com/watch?video=43491

Other link to back this up a little:
physicsworld.com/cws/article/news/41378

gizmodo.com/290051/einstein-wrong-form-a-queue-for-time-travel

What does /sci/ think of this?

4 posts and 1 image omitted. Click Reply to view.
>>
Anonymous 10/08/29(Sun)04:10 No. 8915 ID: 90bdca

The realm in which we dwell is a prison on a flat area. History prior to 1901 is just news and books. We only really know our last 4 generations then a memory deletion event occurs on a mass scale. Gps is real but the stars are the satellites that monitor us. The sun and moon are just part of the simulation to keep us unaware we are locked up. Your jobs, your schools , your homes are all prisons. The best prisoner is one who does not know he is a prisoner. You can escape briefly by dying or hope to join an elite family, other than that you have to treat the system like a real prisoner would: start a gang, get tough and gather supplies. I do not know the point but I am working on it. When the thought of living on a prison planet finally takes hold of you, you will be free from the mms trap of homosexuality and science. You are being brainwashed. TIME TO WAKE UP

>>
Anonymous 10/08/29(Sun)06:38 No. 8918 ID: 1b6367

>>8915

EARTH HAS 4 CORNER SIMULTANEOUS 4-DAY TIME CUBE IN ONLY 24 HOUR ROTATION. Your argument is invalid.

>>
Integris ## Mod ## 10/08/29(Sun)10:17 No. 8919 ID: ea5675
File 128310222570.jpg - (38.04KB , 500x749 , vader-life-7.jpg )
8919

I find your lack of sage to be disturbing.



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8787
FlamingGiraffe 10/08/15(Sun)23:59 No. 8787 ID: 776f8c [Reply]

I'm starting to suspect that the universe exists within my head... I challenge you to prove otherwise!

5 posts omitted. Click Reply to view.
>>
Anonymous 10/08/20(Fri)23:28 No. 8848 ID: 8dcc3b

A simple experiment will do... it'll give you .45 reasons, all aimed at your head. If the universe continues to exist, well, it's not where the experiment is aimed at.

>>
Anonymous 10/08/27(Fri)17:31 No. 8908 ID: 8957a4

>>8848
then my(the only?) universe will end

>>
Anonymous 10/08/29(Sun)06:37 No. 8917 ID: 1b6367

>I challenge you to prove otherwise!

Come over here and I'll kick you in the balls.



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