FriedChicken

1. Potassium Nitrate - Very fun oxidizer with which you can do many experiments

2. Mercury Metal - Probably the most beautiful metal around.

3. Cesium Metal - Probably the most beautiful metal not around... and it makes a nice boom in water.

4. Hydrogen - Very fun gas... make balloons float, make balloons explode... fun

5. NaCl - adds taste to untasteful stuff

6. Ethanol (non-denatured) - Non-Toxic liquid fire... and good fun

7. Carbon and DiHydrogen Monoxide - Enables Life as we know it

8. Neodymium - Powerful magnets, helps us create powerful electric motors, getting us away from crude oil.

9. 5-methoxy-N-acetyltryptamine (Melatonin) - helps me fall asleep

10. Magnesium - Just reactive enough to be fun, just unreactive enough to be manageable.

Try lighting a small pile on the ground w/a magnesium ribbon. If it burns like the magnesium ribbon, it's magnesium. If it's aluminum, it probably won't burn.

Find a battery. Open it. The Black stuff is MnO2. No, it's not toxic.

I suggest using a 6 volt battery, b/c have 4 nice little "canisters" of MnO2.

How about an air conditioning that through fine adjustments of pressure can reverse what the air-conditioner does, so that cold air goes outside and warm air comes inside. This could be some form of alternative to burning fossil fuels. The only problem is running the pump which consumes a lot of energy.

Ok, so it's not a perpetual motion machine.... But I still want to build one of these things. Imagine a little doughnut with a little something constantly going around in circles for hours, maybe even days on end.

I can think of plenty of dissipative effects. For example, the disc would have to be metal to be held up by the magnets. So it conducts electricity and the magnetic fields would create eddys of electric current in the disc which dissipate energy.

The disc doesn't need to be metal. You could just attach magnets to it. It will be opposite poles repelling eachother as the little car runs around in a vacuum.

Ah, well I am a mac user, and apple comes with an insane program called Grapher. It's really really really good. But for some reason here in Germany they don't use graphing calculators.

Perpetual motion machines can work, theoretically, you just can't get more energy out than you put in. But if something isn't using any energy to keep moving (and motion itself doesn't inherently require energy, just acceleration), then sure, it can be perpetual. However, in practice, that's never actually going to happen, since there's no such thing as a completely isolated system.

Why wouldn't the above be seperated from everything?

If you perfectly align the magnets, then you could just send it spinning around in circles, the repelling magnets holding the car up. You wouldn't be getting more energy then you get out, that's obvious. You just need to get it started, and then you're finished.

Yes, but, you're missing one.

I just came to the forum to mention that. I know it's not possible to have a negative square root, but it's a - outside the square root. I even typed that but for some reason didn't leave it.

I have an idea on how to make a perpetual motion device/machine. Imagine a hollow doughnut made of see-through plexiglass under a vacuum . Inside is a magnetic floating car thing, and along the side and bottom are magnets holding it up. You could get it turning by kind of turning the contraption until the car starts moving, and then just set it down. It'll just keep moving and moving and moving, never ending. The only thing that could stop it is photons emitted by whatever light source affects it. In fact you could use these photons by putting a piece of metal at the top with one side white and the other black. The light would be reflected on one side, and absorbed on the other.

Could this work?

I do not simply post answers here, I really want you to understand how to solve these things...

That's awesome, thanks.

Ok, this is what I did:

starts off:

f(x) = 1/4(x^2)^2 - (3/2)x^2 + 2

f(x) = (x^2)^2 - 6x^2 + 8

Then quadratic formula

That gives me 4 and 2

Which results in (x^2 - 2) and (x^2 - 4), which results in an answer of sq. rt. of 2, -2 and 2.

Well, no. What woelen was suggesting was that you find the value of x², then root that afterwards. Hence the idea of x²=z, so the equation that you will be looking at will be [math]\frac{1}{4}z^2 - \frac{6}{4}z + 2 = 0[/math]

 

And once you've looked at that, and worked out a value for z, then you must work out a value for x.

Crap... so is that a wrong answer what I posted above?

No wait shit I got it!!!!! I plug it into the quadratic formula!!! YES!!!!

TY very much

answer is (x-2)(x-4) = x=2,4 or something like that

Yes I understand how to solve equations using the quadratic form...

Isn't it something like x^2 + x + 2 = (x+1)^2 = (x+1)(x+1) ?

or something like x^2 - 2x + 1 = (x-1)(x+2) ?

I can understand that, but throwing in fractions throws me off.

...

Unless I divide everything by 1/4, which would give me (x^2)^2 - 6(x^2) + 8 = f(x)

But what multiplies to -6 and gives me 8?

Here's an incredibly simple math problem that I for the love of god cannot figure out.... help....

f(x)=(1/4)x^4 - (3/2)x^2 + 2

I need to set that to zero. I know I did this, and this is a review problem. But for the love of god I have no clue.

Imagine this. Some woman takes fertility drugs while having sex with multiple persons, and somehow it happens that 2 eggs get fertilized at the same time from 2 different men. Will the resulting children be considered twins?

In school, sixth grade social studies class. The teacher had the TV on when I went walked into the classroom. We watched together before the principal got on the PA system and said all teachers should turn off their TV's... Bastard.

The teacher then said "He doesn't want us to watch history being made". The next class period the only thing we did was talk the entire time about what was happening/what had happened.

who said it was binary. look at the code thats written in really really small letters just above. compare it to the first block of numbers notice a pattern.

I don't get it. I got that it's not binary, and I did see the little text thing (see my original post). I'm completely stumped...

Is that you?

well you`re at the wrong time of year for planting them now' date=' I sow mine April 1`st, so unless you have very expensive indoor growing kit, you`ll have to wait a while. even then they`re best grown in a greenhouse.

it will however give you time to accumulate the other things, such a 100% pure ethanol.

 

Sashatheman, it would all depend on the amount of Capsiacin(oids) present, in large amounts Capsiacin is a Neuro-toxin and quite lethal.[/quote']

Well, I want to grow them indoors on a window porch. Just a few pots, nothing serious. I just want to get some seriously hot chili peppers that make people cry.

This has got my interest up. Since I'm in Germany now and cannot perform my usual pyrotechnic fun I need to find something new and dangerous to occupy my time. I'm looking on ebay, and I found some seeds which I want to buy... See if I can create something hardcore.

There's an old clock tower with an automated bell that chimes according to the time. e.g. at 4 oclock it will chime 4 times.

At 6 o'clock' date=' it chimes 6 times, starting 30 seconds before 6 o'clock, the last chime happens at 6 o'clock. When will the bell start chiming for 12 o'clock?

 

p.s. When i first read this riddle, I got it almost straight away, but no one I've given it to has got the right answer 'till I've told them. From a psychological view-point it's very interesting as it indicates the thought processes of the person working it out as opposed to other brainteasers that test your intelligence. My theory is that if you spend 5 minutes working it out and don't get it, you never will even if you're the smartest person in the world, that's the hypothesis anyway [/quote']

This is what popped into my head as soon as I read this. It starts at 11:59, 5 seconds per chime adds up to 60 seconds.

I can't figure out the level with the binary dot dot dash dot (level 5 I think)...

Just get a macintosh. You will be doing yourself a huge favor with iMovie.

I would rather buy a volkswagen Jetta TDI, and pump it with biodiesel.