# Search results

1. ### Organic Major Pathway prediction

1. Homework Statement [PLAIN]http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs527.snc3/29952_406506367415_501337415_4229454_854152_n.jpg [Broken] 2. Homework Equations Alkyl halides can undergo substitution reactions (via SN1 or SN2 mechanisms) and/or elimination reactions (via E1 or E2...
2. ### Growth rates and induction

1. Homework Statement 2. Homework Equations The mark scheme is 2, 2, 3, 3 For a) ii), it's a sequence of integers up to the floor of n2/2 3. The Attempt at a Solution We haven't done growth rates of sequences, only of equations. a) i) looks like the growth rate would be 5n...
3. ### Formal power series and non/homogeneous recurrence relations

1. Homework Statement 2. Homework Equations We're using generating functions, and recurrence relations of homogeneous and non-homogeneous types The mark allocation is 2, 3, 3 and 2 3. The Attempt at a Solution I think I've done the first part correctly. The closed form...
4. ### Generating functions and Recurrence relations using the Fibonacci sequence

We're using generating functions, and recurrence relations of homogeneous and non-homogeneous types The mark allocation is 2, 3, 3 and 2 3. The Attempt at a Solution I think I've done the first part correctly. The closed form is in terms of z, right? I get: F(z) = z / (1 - z - z2)...
5. ### SF6 Basic pressure question

I'm trying to get my head around a concept. We use Industrial Gas cylinders filled with SF6 gas - the gas cylinder is 70-80% liquid and the rest is in a gaseous state. If this is kept at a pressure of approx 40Bar and is passed through a regulator that allows the gas to be filled into a...
6. ### Lockeheed martin experiments with Anti-gravity

interesting video. The more research I try to do behind this - the more confused I get. Apparently he uses some form of diamagnetic levitation which some say was faked for the documentary. I'm skeptical but I have to admit the video is damn interesting.
7. ### Was windows7 really my idea? Microsoft false advertising

When did windows users get an opportunity to request features for windows7? Why wasn't I told? Essentially isn't windows7 supposed to be vista that works? Even as a beta tester - it was to check its stability and find bugs. Not to add or remove features. So have we been had?
8. ### Independant learning inbetween college and work

I'm a recent EE grad and a I have a month to spare before work. As lazy as this sounds, I'm not too keen on working an odd job, or even tutoring untill work begins. Spent the last few years doing that along with college. I was wondering if I should attempt to go through Griffiths...
9. ### Down time between graduating and working - depressed

I was always looking forward to this period. University is finished and work is about to begin. However I ended up getting really depressed. Having found my degree went by fast, I'm not in touch with anyone from college either. Is this normal? I'm applying to a number of backups and reading...
10. ### Hilarious Acme Kline bottle

Need a zero-volume bottle? Searching for a one-sided surface? Want the ultimate in non-orientability? Get an ACME KLEIN BOTTLE! http://www.kleinbottle.com/index.htm http://img523.imageshack.us/img523/8122/giantkleinbotandcliff2.jpg [Broken] the funniest part has to be the guarantee...
11. ### This picture first made me laugh then think

http://img216.imageshack.us/img216/3503/philosoraptor7.png [Broken] thoughts?
12. ### Moon landing was true - how do i always win this debate?

I hate having to defend the moon landing since so many people disagree with it. The best piece of evidence i can put forward is the mythbusters page debunking the skepticism http://mythbustersresults.com/episode-104-nasa-moon-landing highlight of the page
13. ### Contour integral, taylor and residue theory question

1. Homework Statement http://img243.imageshack.us/img243/4339/69855059.jpg [Broken] I can't seem to get far. It makes use of the Exponentional Taylor Series: 2. Homework Equations http://img31.imageshack.us/img31/6163/37267605.jpg [Broken] 3. The Attempt at a Solution taylor...
14. ### What career options would I have with neuroscience

Like what areas of work should I look into?
15. ### I think i have problem with forgetfulness

Its not really with forgetting names or dates or equations but lately I find when I step outside to check the mail, i end up going outside and forgetting why I came out in the first place; or I stand with a blank face in front of the fridge trying to recall what I wanted to eat. It was never...
16. ### How did Jonathan Swift predict mars moon speeds?

In Gulliver's Travels Jonathan Swift described the two moons of Mars, Phobos and Deimos, giving their exact size and speeds of rotation. He did this more than 100 years before either moon was discovered. granted this is true - how would one even predict such a thing?
17. ### Dr. Michio kaku's video on transitioanl civilizations

this has to be one of the most profound videos i've ever seen (possible repost but I couldn't resist) whats facinating is that we are currently at a transitionary period in this century. However it brings hope to a currently shunned global union gov body.
18. ### How do magnetic fields provide thermal insulation

some Fusion power experimental reactors use tokamaks to contain plasma using strong magnetic fields. However this plasma is at a sizzling 1M Kelvin so how is this level of thermal insulation engineered, using magnetic fields?
19. ### How do TOKAMAK's provide thermal insulation

For current fusion technology the method for containing the plasma is with magnetic fields. However the plasma reaches temperatures of 100,000 degrees+ that would melt anything on earth - so how do these super concentrated magnetic field provide thermal insulation?
20. ### Why does the sun have non uniform distribution of magnetic fields?

I recall the non uniform distribution of magnetic fields is the reason sun spots occur. Why are sun spots more predominant about the equator as well?
21. ### Why does the sun travel faster about its equator?

Would this be valid for all other planets as well?
22. ### Medical Health Risks Associated with Living Near High-Voltage Power Lines

I've never found any conclusive evidence suggesting that it does. Have there been any independant studies conducted?
23. ### The equation of a normal plane to a curve - confusion

Not a homework question say we have a curve f(x,y,z) and the tangent plane to the curve at a point (xo,yo,zo) is given by \frac{{\partial d}}{{\partial x}}(xo,yo,zo)(x-xo) + \frac{{\partial d}}{{\partial y}}(xo,yo,zo)(y-yo) + \frac{{\partial d}}{{\partial z}}(xo,yo,zo)(z-zo) = 0...
24. ### New tesla sedan from 49k, thoughts?

# - 300 mile range # - 45 minute QuickCharge # - 0-60 mph in 5.6 seconds # - Seats 7 people # - More Cargo space than sedans # - 2X as efficient as hybrids # - 17 inch infotainment touchscreen Frankly this looks amazing, sounds less damaging then combustion engines. However if...
25. ### NASA Do all engineers secretly wish to work for nasa?

A lot of us engineering students can never agree on who has it tougher, but the one thing we can agree on is ... that we all wish we could work for nasa. I doubt this is just us. This came up when we found out we can see the latest images of mars on google earth...
26. ### Job Skills How should I state honors research work on my resume?

I've been doing a conjoint project for my thesis with the school of Biomedical Engr and its affiliate hospital. I've conducted most of my work at the hospital - so I was wondering how I'd list this in my resume. As its unpaid research thats a part of my degree - would this be listed under...
27. ### Is hell exothermic or endothermic interesting find

Apparently students were given an assignment to prove whether hell obeyed the laws of thermodynamics and if it was endothermic or exothermic. The most interesting response is given below. http://wfhummel.cnchost.com/hell.html [Broken] author unkown.
28. ### Deriving Bit Error Rates for different diveristy tecniques

1. Homework Statement Using the normal distribution for different modulation techniques over rayleigh fading , we have to derive SNR values for different Diversity techniques such as selection combining, Equal Gain Combining and Maximal Ratio Combining. Now for Non-coherent BPSK I have to...
29. ### What are the advantages and disadvantages of different types of transformer grounding

what are the advantages and disadvantages of different types of transformer grounding -with regard to system protection and fault current reduction? we have the following grounding types YN - YN YN - Delta Delta - YN Delta - Delta where can i find a good resource that explains this?
30. ### Why do 3 phase balanced faults cause such high fault currents?

Not a homework question, Just trying to get more information about it. Its hard to find a textbook or a site that explains this well. thanks