blike

I heard he had cirrhosis.

In the next month sometime I'm going to test my first homeade rocket motor. I'm using a commercial case and nozzle (which is made of aluminum), but I can't find any specs on the maximum internal pressure the case can withstand. The best I can do is calculate the pressures commercial rocket motors create and try to keep my homemade ones in that range. I want to build some sort of CHEAP box that will withstand a small blast and contain flying aluminum shrapnel. The tops and bottom of the box will be open (I don't care if it flies up, I just don't want a razor sharp chunk flying at my head). Any suggestions? It needs to be as cheap as possible!

In the next month sometime I'm going to test my first homeade rocket motor. I'm using a commercial case and nozzle (which is made of aluminum), but I can't find any specs on the maximum internal pressure the case can withstand. The best I can do is calculate the pressures commercial rocket motors create and try to keep my homemade ones in that range. I want to build some sort of CHEAP box that will withstand a small blast and contain flying aluminum shrapnel. The tops and bottom of the box will be open (I don't care if it flies up, I just don't want a razor sharp chunk flying at my head). Any suggestions? It needs to be as cheap as possible!

Just because it's your photobucket account doesn't mean it's your property. That's not your picture. Admit it. I have the URL you're stealing them from.

Just because it's your photobucket account doesn't mean it's your property. That's not your picture. Admit it. I have the URL you're stealing them from.

You're violating copyright by posting that image as your own. The site you're getting your pictures from requires a subscription (hint) and the copyrights are clearly stated. Anyone who wants to 'see more' of "you" can do so. heh

Depends on the inflection and the part of the world you're in Anyhow, welcome!

Hrm. Thanks for the heads up, we'll keep an eye on it. Hopefully not too many users are getting that message.

That's not really a bandwidth issue, it's a "server load" issue. Essentially the site is programmed to kick out that error message when the work load on the server is high. It's designed to keep the server from crashing. How often and when do you get that message?

This isn't really an experiment gone wrong, but it was a bad decision made in the lab In organic chemistry lab over the summer, we were using magnetic stirring things. While cleaning the beakers my partner accidentally let the stirring rod go down the drain. He didn't want to have to pay for it so we got the genius idea of opening the pipes down below to find it. We suspected that it was caught in a certain bend, so we opened the pipe. Horrible mistake. The pipe fed directly into the tank that holds all the chemicals that are dumped down the drain. The contents of that tank ended up on the floor. We spent an hour and a half cleaning it up, and we never found the stirring rod.

What is your favorite experimental "mishap"? Mine would have to be the time I decided to drill a hole in my potato cannon to see if the added oxygen concentration would have an effect on the firing distance. I forgot to point the hole away from me. ouch.

Before anyone posts you need to explain why those are invalid.

Oooh good question. It's been forever since I took organic chemistry, but I do believe the convention switches from "cis" and "trans" to "E" and "Z" when dealing with different substituents, so you may be correct. Do you have an organic chemistry textbook? Unfortunately I sold mine so I can't go back to review the proper rules for naming them.

Go with what Mak10 said. You have to know the time period it stays in contact with the wall. Then you can use the momentum divided by the time to find the average force. f=ma a= dv/dt (change in velocity over change in time) thus f = m (v/t) So it varies based on impact time and the change in velocity.

Yes, that molecule can have a cis or trans conformation. The carbon atoms don't have to have any similar substituents to be cis or trans. When you add HBr, you will get an electrophilic addition across the alkene. The Markovnikov rule applies here, so the hydrogen will add on the side with the most hydrogens. If your reagent is a peroxide or if you're using heat or light you will have the anti-Markovnikov product because it is proceeding through a radical mechanism.

But the Republicans did not embrace the Nazis whereas Michael Moore sat in the presidential box at the DNC. They should have done more to disassociate.

http://odj310388.com/other/videos/medit.mov and for the bittorrent users: http://www.numbski.net/downloads/sw3trailer.torrent

I think some of the problem here is that when we see papers like that we automatically assert that they are the equivalent of our New York Times, instead of our The Daily Star (supermarket crap no one reads). It's hard for us to put the papers in context as far as national reputation.

Who said the UK media wasn't biased? Or was it just the BBC we were arguing over?

A lot of political analysists have been attributing the turnoff to the democratic party to hardcore liberals such as Michael Moore, George Soros, MoveOn.org, etc. The democrats had a major motion picture working for them which seen by millions which essentially slammed Bush, much more money from outside groups including George Soros funding huge smear campaigns on TV, celebrities publically backing up Kerry and slamming Bush, and the liberal media to back it all up! How in the world did they still lose this election? They didn't even get one southern state, and the southern states historically vote democrat. I'm not really trying to bash the democratic party here, but I think they went wrong somewhere. They should have had this election tied up. Do you think that part of it was from associating with nutjobs like Michael Moore?

lol, I'm sure it is.

Indeed. I'm not exactly sure why visas are a bad thing aside from the hassle.

The problem with a 3rd party system to determine the validity of a charge is who will sit on the committee. To be honest, physicians are best suited to judge whether or not another physician acted properly. That's one of the reason malpractice suits are so easily won in the US. Whichever side can appeal to the jury of nonphysicians better usually wins the case. The defense has to be able to make the jury understand what happened, what went wrong, and that it wasn't the doctors fault something went wrong. Often times these are very complicated medical cases which are very difficult to explain all the dynamics to a nonmedical person. All the prosecution has to do is appeal to the emotions of the jury. However, there is always the argument that a jury of physicians would be inherently biased.