Joe Z

Does water contribute 1 or two electrons to the metal complex? I can't find information on it in my book or the powerpoint slides from my class. Please help, I have the ACS (Inorganic) test in a few hours and I have a feeling this will be on it. 10 points available for a good answer, obviously.

Why does a double-dehydrohalogenation reaction always result in a triple bond? I have the molecule 1,2-dibromooctane, and from the IR data, it appears to only have Sp and Sp3 carbons, but no Sp2, suggesting that only the triple bonded isomer is formed, but not the double bonded one.

I guess, first thing, do halides count when you are counting up the substitution of the ß-carbons? (What I mean is, would R–CH2X be considered mono- or di-substituted?)

If they do not count, why is the Sp configuration the major product?

I'd check my book, but it only talks about double-dehydrohalogenations for like, one paragraph, and I can't find a mechanism on the internet.

I'm trying to build a projection dome for an immersive project. Right now, I'm considering buying a large 3-5' latex balloon and pouring some sort of polymerizing resin into it while it's inflated, then popping or cutting the balloon. I'm trying to figure out what resin to use to ensure a uniform, translucent dome, it appears that most such compounds, like fiberglass or epoxy, dry clear or opaque. Any suggestions out there?

Hello, I have a grammar question. In the sentence, "The seaguls cannot cross ___ inhabit the North Pole," should the blank be filled with "nor" or "or?" A friend is suggesting "nor," however, I feel that "or" has a better flow (both logically and phonetically). I can't find anything about it online, except for the fact that Google always corrects a sentence which includes "nor" used in this context. For an example, try to search for "He cannot walk nor run."

If anybody could let me know the proper answer, it would be great, especially if they could hook me up with an authoritative document regarding this case.

I have the "Portable Handheld NWR-SAME Weatheradio" and somehow the alarm clock setting was turned on. I've gone through the menus and the owners manual (here: http://support.radioshack.com/support_meters/doc72... ) And I can't find anything about turning the alarm clock off. Does anybody know how to turn it off?

A corded phone has been hung over my gate, with the receiver on my side, touching the ground, and the phone is hanging from the cord on the other side. I don't want to touch it, what should I do?

Is it possible that someone could install a motion-sensitive bomb in a phone? Specifically a radioshack phone?

I'm using a new macbook, running osx, so the chipset/driver is probably broadcom. My RSSI value is always a negative number, and seems to hang around -79. What does this mean? Is it better for the number to be higher in magnitude? or closer to zero? Also, what is "transmit rate?"

Hi, I can't seem to get this problem, can anybody help me out?

~~~~~~~~~~~~~~

Suppose you have a choice of two coffee cups of the typeshown, one that bends outward and one inward, and you notice thatthey have the same height and their shapes fit together snugly. Youwonder which cup holds more coffee. Of course you could fill onecup with water and pour it into the other one but, being a calculusstudent, you decide on a more mathematical approach. Ignoring thehandles, you observe that both cups are surfaces of revolution, soyou can think of the coffee as a volume of revolution.

1.Suppose the cups have height h,cup A is formed by rotatingthecurve X = f(y) aboutthe Y-axis, and cup B is formed by rotatingthe same curve about the line X = K. Find the value of K suchthat the two cups hold the same amount of coffee.

2.What does your result from Problem 1 say about the areas A1 andA2 shown in thefigure?

~~~~~~~~~~~~~~~

So, in order to solve this, I made two equations for volumes of revolution,

π int([f(y)]^2dy)

and

π int([k-f(y)]^2dy)

And I set them equal to each other, simplifying to get:

K= (2/y) * int (f(y)dy)

Which is all good and well, but what does that mean for the areas?

http://img23.imageshack.us/i/spidernq.jpg/

http://img99.imageshack.us/i/spider2l.jpg/

http://img717.imageshack.us/i/spider3f.jpg/

Found the little bugger on my car today. Is it poisonous? Anything important to know about it?

I'm thinking about getting a mac mini, using an elegato device to make it a DVR, and then using a whichever-vid-out-port-to-coaxial-adapter to connect it to the house's existing coaxial cable infrastructure to get the image to all the TV's, and control it remotely using AirMouse on iPods. The only part I'm not sure about is the analogue pat; the coaxial cables and several CRT TV's. Will the picture be sized properly to look nice on a 42"plasma, while still looking decent and having the right aspect ratio to fit CRT televisions ranging from 10 to 30-something inches?

I'm guessing I would have to use 4:3 on all the screens, right? Which is OK, since that's the ratio I get from my satellite box anyway. Do you think it would work even if I did that? or do you figure that every TV would need a different underscan setting?

My family owns three laptops with 802.11n, and two old desktops which only have 802.11g. My current wifi antenna is an ancient Apple airport "snow" model, which only supports 802.11 a+b. Our internet is (as far as I know) only 1.5 Mbps, and the highest download rate I've ever seen (right next to the antennae, downloading from Steam) is 400kb/s, though most downloads cap around 200. The two older computers are upstairs, pretty much directly above the router, an the laptops move around the house. One room gets poor reception, which I suspect is the result of a large mirror near the entrance. Typical wifi performance on the newest laptop is:

RSSI: -70

Transmit Rate: 11

Will a new wifi antennae that supports the "n" standard improve our connection speed enough to justify the cost? And will "g" performance make a notable difference on our older computers?

I'm taking Calc II this Summer, and I was wondering, is it practical to only memorize the trig derivatives, and use those to get the integrals? I'm especially concerned about practicality within the testing time frame, and usefulness during more complex problems. Are there any trig-function integrals you would suggest I learn? Thanks!

I've been asked to, using integration by parts, prove the reduction formula;

INT (tan^n (x)) dx = (tan(x)^n-1)/(n-1) - INT( tan(x)^(n-2) dx)

I can barely manage to get to the part with the recursion (if that's an appropriate way to describe it), in which I come up with;

I= (tan(x)^(n-1))/(n-1)

The next step is what throws me off. In the solutions manual, they go straight from that to the answer;

-------------------------------------------------

"Returning to the original integral, INT (tan^n (x)) dx = (tan(x)^n-1)/(n-1) - INT( tan(x)^(n-2) dx)"

-------------------------------------------------

Which, from my perspective, just seems to jump up out of nowhere, with no formal explanation. Can someone please explain the major steps of this proof? I'm particularly interested in that last step, but any other information would be greatly appreciated.

I've got the following equations:

y=x^3

y=x

and I've been asked to revolve them about the x-axis and find the volume.

I came up with:

V=integral (from 0->1) of π[x-x^3] dx

which comes out to π/4. My book says the answer is 4π/21. What have I done wrong?

I've always been told that touching them leaves sebaceous oils on the surface which reduce the bulb's life. Is this true, or just a myth?

http://en.wikipedia.org/wiki/File:Howard_Hughes.jp...

There's a big grey area, as if he'd been poorly photoshopped into the photo. Any idea what that is?

I've been given the sequence to a plasmid, PLT61, from addgene.org. I've been asked to search the first 1200 base pairs on an NCBI BLAST to determine which part of the UNC-22 gene is present on the plasmid. But I'm at a loss. Can anyone give me a hint as to what on the NCBI search I should look at to figure this out? Thanks.

The principle of complementarity states that the nature of light can be described by either particle or wave properties, but that no experiment or method of observation can observe both natures simultaneously. Do the rhodopsin complexes in the rod and cone cells behave in accordance with the particle or wave nature of light? I'd assume particle, with analogy to the photoelectric effect, but I'd like to hear the opinion of more educated individuals.

It has no temporal velocity? By my understanding of Einstein's four-vector, any particle with a spatial velocity c must have temporal velocity 0. But if temporal velocity is 0, the regular velocity (d/t) must be infinity. So, on a Feynman diagram, a photon should just be a horizontal line (parallel to the x axis, perpendicular to the t axis). But it seems to take a certain amount of time to get between two spatial points. Can someone explain to me how this makes sense?

If you could have whatever you wanted in a game, what would that game have in it? Would it be an fps? a platformer? Or some strange new type altogether? Who or what would the main character be? What would be the plot and how would you progress through the levels? Just let me know what you think would be the most fun.