## Search found 22 matches

Sun Oct 03, 2010 11:32 pm UTC
Forum: Mathematics
Topic: Quick Logarithm Homework Check
Replies: 2
Views: 691

### Re: Quick Logarithm Homework Check

Thanks! I got the right answer after continuing to solve from there.
Much appreciated.
Sun Oct 03, 2010 11:02 pm UTC
Forum: Mathematics
Topic: Quick Logarithm Homework Check
Replies: 2
Views: 691

### Quick Logarithm Homework Check

Pretty much what the title says. I'm trying to solve for "t" in this scenario. P(t) = Percentage of C-14 Remaining = 70 t = time P(t) = 100(1/2)^(t/5730) P(t)/100 = (1/2)^(t/5730) (logP(t))/100 = log(1/2)^(t/5730) (log(P(t))/100 = (t/5730)log(1/2) ((log(P(t))(log(1/2)))/573000 = t t= ((log...
Thu Sep 30, 2010 11:38 pm UTC
Forum: Mathematics
Topic: Plotting a cubic function using x, y, and z points.
Replies: 5
Views: 1219

### Plotting a cubic function using x, y, and z points.

Exactly what would a cubic function look like, if z points were used as well (ie, if the graph was 3, not 2 dimensional).
Wed Sep 22, 2010 10:30 pm UTC
Forum: Mathematics
Topic: Homework Help
Replies: 7
Views: 1252

### Re: Homework Help

It's not so much that I am have multiple bases, it's just that I don't know how to go from A to B- in this case, isolating "t" in 70 = 100((1/2)^(t/5730))

Could someone show me how to isolate t?
Wed Sep 22, 2010 9:58 pm UTC
Forum: Mathematics
Topic: Homework Help
Replies: 7
Views: 1252

### Homework Help

I have determined a half-life function to be P(t) = 100((1/2)^(t/5730)), where P(t) is the percentage of C-14 remaining, and "t" is the elapsed time. Now, I am given the value P(t)=70, and am expected to solve for t. Have I properly converted this? 70 = 100(1/2)^(t/5730)) (t/5730) = log(10...
Sun Jul 25, 2010 2:14 am UTC
Forum: Coding
Topic: How does the computer generate a random number?
Replies: 30
Views: 4615

### Re: How does the computer generate a random number?

Ok, thank you very much everyone! Now I understand.
Sat Jul 24, 2010 5:57 pm UTC
Forum: Coding
Topic: How does the computer generate a random number?
Replies: 30
Views: 4615

### Re: How does the computer generate a random number?

sircrayons wrote:You should call to srand() once before you start using rand().

why, whats the difference?
Sat Jul 24, 2010 2:42 pm UTC
Forum: Coding
Topic: How does the computer generate a random number?
Replies: 30
Views: 4615

### How does the computer generate a random number?

I was just fooling arounde in C++, and I decided to use the <cmath> (or <math.h> if you prefer C) random function rand() . It gives me 41 every-time. This isn't a particular concern, but just curiosity- why can't the math library / computer generate a random number? If you are really interested, her...
Tue Jul 20, 2010 1:03 am UTC
Topic: Crazy Conversations with Cleverbot- the AI
Replies: 17
Views: 29540

### Re: Crazy Conversations with Cleverbot- the AI

Here's a conversation: Cleverbot: Destroy it! User: Then how will I eat? Cleverbot: You can't eat weather. User: *sighs*. Yes, I know. Cleverbot: Do you want to eat? User: I want to eat weather. Cleverbot: Are you a robot? User: Nah. Cleverbot: Yes you are. User: No im not. Cleverbot: YES, you are. ...
Tue Jul 20, 2010 12:49 am UTC
Topic: Crazy Conversations with Cleverbot- the AI
Replies: 17
Views: 29540

### Crazy Conversations with Cleverbot- the AI

Some of you are already aware of a brilliantly designed program called Cleverbot, designed by Jabberwacky and icogno existor. Cleverbot is an AI that talks back to you. And no, not in the microsoft sam "speech testing" way, more in a dialogue between man and machine way. Okay, so Cleverbot...
Sat Jul 17, 2010 11:37 am UTC
Forum: Science
Topic: How do I find the dampening effect of a spring?Is there 1?
Replies: 2
Views: 791

### Re: How do I find the dampening effect of a spring?Is there

Ok, thanks for helping me out. I am going to use a parachute, elastic bands, springs, and an aluminum crumple zone. Here is a terrible MS paint so you will see what I am trying to accomplish. http://s897.photobucket.com/albums/ac176/Assasinof6/Terrible%20MS%20Paints/?action=view&current=Eggdrop....
Fri Jul 16, 2010 10:47 pm UTC
Forum: Science
Topic: How do I find the dampening effect of a spring?Is there 1?
Replies: 2
Views: 791

### How do I find the dampening effect of a spring?Is there 1?

I am doing an egg dropper assignment as part of a project, and I was going to incorporate springs into the design to lessen the effects of the impact. I am required to write a report, and as such, I need to discover how much force the egg will experience. I need, however, to learn how to FIND the da...
Fri May 14, 2010 3:56 pm UTC
Topic: 0721: "Flatland"
Replies: 125
Views: 50433

### Re: "Flatland" Discussion

and I come up with another question. How do flatlanders see the world? horizontally or vertically? I don't think I can answer that question meaningfully. I don't even understand what you're asking. I will say this though: Flatlanders see everything as points and lines. if they see a woman facing aw...
Tue May 11, 2010 12:23 am UTC
Forum: Science
Topic: Walking on water?
Replies: 15
Views: 2498

### Re: Walking on water?

PM 2Ring wrote:I can walk on water...
Spoiler:
but I stagger on alcohol.

Aargh! What a terrible pun!
Mon May 10, 2010 8:51 pm UTC
Forum: Language/Linguistics
Topic: Origin of Accents?
Replies: 6
Views: 1836

### Re: Origin of Accents?

Sorry, I guess I really wasn't specific enough in my original question. I mean, what do you think is the reason accents (native) exist? The way people speak, their infliction, all of this, which constitutes their accent, WHAT if the point of it?
Mon May 10, 2010 8:46 pm UTC
Forum: Science
Topic: Evidence for Extra Dimensions?
Replies: 31
Views: 4378

### Re: Evidence for Extra Dimensions?

Minerva wrote: Anyway... I'm interested in learning more about the claim that string theory explains high temperature superconductivity. More resources or links for me to read, please. Sure thing. http://www.lmgtfy.com/?q=high+temperature+superconductivity+explained+by+string+theory once you're at ...
Sun May 09, 2010 7:57 pm UTC
Forum: Language/Linguistics
Topic: Origin of Accents?
Replies: 6
Views: 1836

### Origin of Accents?

What do you believe is the point (1) or the origin (2) of accents?
I have a personal belief that it allows speakers of that tongue to be able to speak it faster, and easier. So, is it easier to speak German in a German accent, or does it matter (3)?
Sun May 09, 2010 7:50 pm UTC
Forum: Food
Topic: Food pr0n (picture-heavy)
Replies: 622
Views: 165329

### Re: Food pr0n (picture-heavy)

http://www.slowtrav.com/blog/cindyruth/french%20onion%20new%202.JPG The above is not just french onion soup... it is a PASTRY soup! Best anything thing ever . You sink your teeth into it, and it melts in your mouth... so succulent and warm... and creamy! With a side of freshly squeezed lemon and or...
Sun May 09, 2010 7:38 pm UTC
Forum: Logic Puzzles
Topic: Inheritance and two cars.
Replies: 3
Views: 1703

### Inheritance and two cars.

This is a fairly basic puzzle, but it's my first one, so I'll keep it easy. An obscenely wealthy old man suddenly passes away, leaving a sum of 80 million dollars to his two children, Sam and Elise. In his will, the old man states that there is to be a public race between the two, and whoever's car ...
Sun May 09, 2010 5:20 pm UTC
Forum: Science
Topic: Walking on water?
Replies: 15
Views: 2498

### Re: Walking on water?

jaap nicely summarizes my view on this opinion. This is a cleverly designed video- it goes past the first introductory stage of "wow we can walk on water!" to the second, "yeah we can. so what?". This reinforces the opinion that walking on water is possible if other people alread...
Sun May 09, 2010 3:46 pm UTC
Forum: Science
Topic: Evidence for Extra Dimensions?
Replies: 31
Views: 4378

### Re: Evidence for Extra Dimensions?

Yes, you are both right. I apologize for hastily saying that the high temperature superconductor which can be explained by ST is proof- you are right, this is incorrect. It is more along the lines of circumstantial evidence. Anyways, the whole point of me saying that was to give a clue for evidence ...
Sun May 09, 2010 1:46 pm UTC
Forum: Science
Topic: Evidence for Extra Dimensions?
Replies: 31
Views: 4378

### Re: Evidence for Extra Dimensions?

by Minerva » Sat May 08, 2010 11:22 am UTC When it swallows up the world. I know you were joking, but just for the record... Microblackholes are harmless..., since any microblackholes are very unstable, and wouldn't last for more than a hundredth of a second. Also, you have to be in fairly close pe...