Homework Help

Hi everyone I need to write about a current event article that is related to my micriobiology course. The article I found is about food posioning: http://www.cnn.com/2013/04/23/health/foodborne-illness/index.html Now that I have my article I need to formulate two questions that I will then do further research on to answer. My question is what two questions can I use to formulate a good responses using research?

Hi all I'm researching how light rare earth elements - specifically neodymium - is processed. If anyone can help explain to me how the purification process works (if you use really complex terms could you please just give a brief definition) as well as providing chemical equations, I would really appreciate it. And if not, if you know some good links or articles that do explain it, please let me know of them as well. Thanks

Alright so I have been posting these questions up on a whole bunch of forums and no one seems to be answering any of the questions I have posted up, so it would be much appreciated if someone where to help me out with the following questions, because I feel they are easier then they seem but I just over analyze things. Any help on the following questions will be appreciated. Thanks in advance 1. Use the initial pH of the acetic acid solution to find the initial [H3O+] and initial [CH3COO]-(2) Initial pH = 2.58 2. Assume that the amount of CH3COOH that ionizes is small compared with the initial concentration of the acid. Calculate Ka fo…

you can go to this pic(link): http://imageshack.us/photo/my-images/854/scan0002fh.jpg/ In Green Circle: why is K = V^2/2k? and what is the small k? is it kinetic energy? In Red Circle: what is 778? how 778 appear in this problem? in Black circle: why is Work=pv? thx in advanced just explain even if it just one question you can answer Godbless

I am doing a titration for school between sodium hydroxide and vinegar. I have no idea what the equation might be so I completely guessed. I was wondering if someone could help me by telling if it's right or not the reaction equation is: CH3CO2H + NaOH --> NaCH3 + CO2 + H2O If it is not correct can someone please tell why and how I may be able to improve it? Thanks a lot

Hey guys, I have trouble grasping Quantum Mechanics...not such a rare condition, I guess I just need a nudge in the right direction, I seem to know the basics but somehow when I try and solve the homework we are given I get stuck and unsure on where to begin. Let P be an operator that commutates with the Hamiltonian HP=PH show that if |phi> is an eigenvector of H, P|phi> is also an eigenvector of H with the same eigenvalue. Thanks in advance!

I don't understand the significance of laps rate, how does it provide negative feedback? http://en.wikipedia.org/wiki/Climate_change_feedback

How would I find the height of a point in a projectile? Not the maximum height but rather any point on the projectile. I am given the range and I already have the max height, the time at the max. height and of course the acceleration

Hello guys, I was working with this complex numbers and got stuck in this confusion. [Pic attached] The confusion is that by solving with two different approaches, the value of [theta] obtained is different. In the first approach, I obtained argument [theta] = 0. Afterwards, using polar conversion, the argument obtained was [theta] = [pi] for the same problem. Is it possible because else for every complex equation; be it z^4-1, z^6-1, etc...I am getting [theta] = 0. Am I doing something terribly wrong? Is the complex to polar conversion and vice versa correctly done? Thanks for the help in advance

Hi everyone. So, I've got some homework that looks like this: And I'm searching through my book and cannot find the differentiation between address lines and blocks. But, regardless, I have two attempts at solving part A): Attempt 1: the cache is 32kB in size, and has a block size of 64B. So 32kB/64B = 512 Blocks Attempt 2: I found a PDF online that says that if there are 32 address lines, that corresponds to 2^32 words of memory. If the block size/length is 64B and word size is 32bits, then each block holds 16 words. So 2^32 words/16 words per block = 268435456 blocks. PDF http://umcs.maine.edu/~cmeadow/courses/cos335/COA04.pdf Those are my thought p…

While doing my homework, I came across a problem asking me to graph a hyperbola with no horizontal or vertical asymptotes, and an oblique asymptote at y= x + 2. Another problem is asking for the graph of a hyperbola with no asymptotes! I am certain this lack of asymptotes is not due to a calculation error on my part, as this is merely a graphing exercise and the worksheet lists the number and variety of asymptote. Any help would be incredibly appreciated as I have no idea how to complete either of the problems (they're listed below for reference). r(x)= x^2 + x - 6 (no horizontal, vertical, or oblique asymptotes) x - 2 r(x)= x^2 - x - 6 …

Hey guys I kinda new to forum so if I open topic in wrong section don't judge me to much ) I have poster presentation soon in math and I have not really done anything yet (yeah I know, my bad) I don't even have topic (even worse, I know) I'm thinking about doing about pi (as it's so awesome/special) or about e (special as well), but expect some basic stuff and proofs I need something where those are used in some special way, what makes them special in particular and then specifically in solving that problem (which I should introduce) I would be really thankful if you give any ideas about what/how to do it, what sources to use and all kind of staff that I …

This is my first post. so apologies for breaking any posting rules. My question regards a pre hybridization procedure in which the denatured DNA is transferred onto a nylon membrane. To do this the nylon membrane is baked which allows the DNA to covalently bind to the membrane, through a dehydration reaction. Or so I was told by my university tutor. However, I'm not sure of the chemistry behind this reaction. If anyone could explain or reference a source that can explains the chemistry concisely I would appreciate it. Thanks.

I realise that liver glycogen phosphorylase is allosterically regulated by glucose, and is generally in the phosphorylated active form when glucose levels are low, but the textbooks (both Stryer and Voet and Voet) are ambiguous at to whether the liver isozyme is covalently modified by the signalling cascade triggerred by glucagon, or whether this only applies to the muscle isozyme. It is implied that the phosphorylated 'a' form is the "default" state of the enzyme, which will break down glycogen unless signalled otherwise; is this telling me that the enzyme will be active regardless of whether glucagon is present, or will some glucagon be necessary to maintain the enzyme …

Hello, I am quite new to HMM but I know the general approach of the system. I am using matlab for calculating a transition/emission matrix for a observation- sequences. I want to use Baumwelch alg. for training and the viterbi- alg. for determining the most like- full sequence. My problem is the following (lets say the system is for gesture recognition and we have 2 gestures A,B): By training I get for every sequence the parameter of the HMM for classification. Lets assume I have 30 samples for every gesture. By the Baumwelch alg. I get now 60 HMM (for every sample one). And here stops my understanding. Do I have to "sum up" these 60 HMM to 2 one HMMA,HMMB? And …

Here is the problem: 50.00 mL of an aqueous solution which is 0.0525 M in sodium phosphate is titrated with an aqueous solution which is 0.100 M in ferrous chloride. Calculate the solubility of ferrous phosphate when enough titrant has been added to be one milliliter past the equivalence point of the titration. info: Iron(II) phosphate Ksp=1.0 x 10^-36 Iron(III) phosphate Ksp=4.0 x 10^-27 can someone help me get started with this? i am completely lost

I was just wondering the principle of a hydrometer. i know its based on Archimedes principle/ the law of flotation but i can't seem to understand how this explains the fact that for a denser liquid, the object is buoyed up more and in a less dense liquid it would sink more. i hope someone can help me clarify this. Thanks.

Hi all, I am writing my thesis and managing the references. I have faced an issue. For each chapter, I want to start the reference number from 1 (not starting from the last reference number of the last chapter). I am using Mendeley desktop as reference manager and I am using microsoft word office. I have tried "page break" and "section break" but It did not solve the problem. I appreciate any help. Thanks

Can anyone help me with my assignment please. thank you Consider the following function that forms part of a C program that has been written to measure the execution time of a simple arithmetic statement like sum = sum + increment; long sumLoop(long increment, long iterations) { long i, sum=0; for (i=0 ; i < iterations ; i++) { sum = sum + increment; } return (sum); } The following (numbered) lines of IA-32 (in GAS format) assembly language corresponding to the above function have been generated when the C program was compiled without optimisation: 10 sumLoop: 11 pushl %ebp 12 movl %esp, %ebp 13 subl $8, %esp 14 movl $0, -8(%ebp) 15…

Can someone help me with my assignment please 3 (a) Two core ideas in operating systems are multiprogramming and timesharing/ multitasking. What does each of these ideas entail? What is the main motivation behind their introduction? (4 marks) (b) What are the different methods of passing system call parameters to the operating system? What are their respective advantages and disadvantages? (6 marks) © Given five memory partitions of 100 KB, 500 KB, 200 KB, 300 KB, and 600 KB (in order), how would each of the first-fit, best-fit, and worst-fit algorithms place processes of 212 KB, 417 KB, 112 KB, and 426 KB (in order)? Which algorithm …

4 (a) What are the five layers in the Internet protocol stack? What are the principal responsibilities of each of these layers? (10 marks) (b) Describe briefly the chain of events that occur when Alice types the URL for www.google.com into her web browser and that will eventually result in Google’s home page being displayed. Your answer should concentrate on the protocols that are used prior to the sending of the HTTP GET message to www.google.com. (6 marks) © With reference to the following Telnet session transcript give an explanation of the HTTP protocol: $ telnet www.cis.strath.ac.uk 80 Trying 130.159.196.40... Connected to www.ci…

Hey!!! I need some help at the following exercise... We have a box with balls and 10% of them are red. If we choose at random 20 balls with replacement, which is the probability to pick more than 3 red balls??? Thanks in advance!!!

The patient was a 3-year old female referred to the pediatric clinic with a 5 week history of diarrhea. It was characterized as green and often watery. Although potty trained, she was occasionally incontinent of feces. She had no fever, nausea or vomiting. She was an only child who attended group day care and her mother had diarrhea for 3 days about 1 month previously. The family drank filtered water. Her physical examination was unremarkable. Upon stool examination, a typical unicellular protozoan parasite was seen under direct fluorescent microscopy. 1) what kind of parasites can cause such diarrhea? 2) Are there virulence factors of this pathogen? 3) This organism is…

I need insulators for a thermos that is able to keep water Warmer than 25 c for three hours in a fridge. Any ideas?

This is not homework but i would like a question answered... In a building technology class a discussion about doors started. It started out with a particular style of door but later progressed to a style of architecture and art. The rest of my class complained that i was straying from the topic, that the topic is doors and the only thing relevant was an actual door. I believe that architecture, history and art are connected and can not be separated. Am I right or wrong? How important is history to architecture?