Procedure Definition and 89 Threads

I am calculating Responsivity of a pn junction photodiode (a.k.a the target) by irradiating radiation from LED sources. For this purpose, i have two LEDs, one UV and another green LED. Note that LEDs are placed close to the target.UV LED : Manufacturer has given total radiant power to be 20mW...

I need some help understanding the LC/MS process for proteomics. I am writing a paper on using LC/MS to detect nut allergens in food. My problem is that I have never used LC or MS so I do not understand the process in the lab. The resources I have found are too complicated. I am a 3rd year...

1) -|2x-3|+|5-x|+|x-10|=|3-x| 2) |2x-3|-|5-x|-|x-10|-|3-x|=28 3) -|2x-3|+|5-x|+|x-10|≥|3-x| How can we solve these problems? The method I know is to plug in the critical values to see which modulus becomes positive and which one becomes negative. Then find out the values of x for which the...

Hi, I'm currently having an ongoing debate with some teachers regarding a practical for Newton's Second Law. The prac involves a cart attached to some weights via a string on a pulley. The protocol as it stands has students add increasing mass to the end of the string (not changing the mass of...

Hello Experts, I have a question regarding the operation of a steam boiler. if the load is increased on the turbine generator set of a steam power plant, i learned that the fuel injection to the boiler has to be increased to serve the additional load. so my question is, do we also have to...

In Nielsen's book, the chapter of quantum circuits does not describe explicitly any procedures to design a circuit. For example, given the matrix of Fredkin gate, ##\begin{bmatrix} 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 1 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 1...

Is there some sort of special format of proposal they must put together? Do they need institutional support (from their university, dept. chair, company, etc)? Are there costs involved? Does it depend on the facility? Does anyone know where I can get this sort of information? Thanks in...

What is the best procedure to determine Lambda to calculate the Poisson probability? Say I want to calculate P(X ≥1) of an accident occurring next day. For this I would calculate the average of daily accidents and divide it by 10. The question is, should I take the previous 10 days? Or calculate...

At school I and a handful of other kids are devising an experiment to send up to ISS to test it over a period of 30 days next year. (Yep, we're quite fortunate to have this opportunity!) We've chosen to grow piezoelectric crystals using (super)saturated solution of the piezoelectric crystal...

Homework Statement Homework Equations n/a The Attempt at a Solution I'm kinda confused on the instructions of this net ionic lab. For this lab, I am suppose to find out how several solutions (6 of them) react with each other to form precipitates. We use some systematic way to test these by...

Hello everyone, I found this article that explains how some sorts of radiation treatments could be controlled with positron-emission tomography (PET). A team of researchers, led by Professor Samuel Achilefu from the Washington University School of Medicine’s departments of radiology and...

From the list below, identiyfy what is present in the flask at each of the following times during the Dumas procedure performed with methanol: Methanol (g) Methanol (l) Methanol (aq) Air (g) Water (l) Water (g) a) After the methanol is added and the flask is covered with foil? b) Just...

Homework Statement There really is no problem for this. I am just writing my procedure for orgo lab and I haven't don't any distillation before. I tried googling "open-air" distillation to see if it was equivalent to simple distillation, but I can't seem to get a straight answer. Homework...

Good evening, I am new to this forum and do not have a strong physics background. So if my questions seem woefully inept please respond with a simple laymans answer. I understand that there are 2 basic ideas for fusion containment, and that the main 2 components of any successful fusion...

Homework Statement Define a procedure that does the following: From the string of numbers from 1 - 9 it creates a list that contains the numbers that are bigger than the preceding number and adds the smaller ones to a sub-list. Example: string='3057842103' print(numbers_in_list(string))...

Homework Statement Consider the 3 following Scenarios: 1. 2. rms value of line voltage is 208 V Three equal impedances, 60 +j30 W each, are delta-connected to a 230-V rms, three-phase circuit. Another three equal impedances, 40 +j10 W are wye-connected across the same circuit at the same...

I have a physics lab and the main question is: 'How does the radius of the loops of a solenoid affect the magnetic field produced by the coil?' For my hypothesis, I wrote: "The larger the radius of a solenoid is,the weaker the magnetic field will be." I searched online and found out I was...

Homework Statement If an object is hanging by a thread, how fast must it be twirled around in order to break the thread? (must also provide explanation of why this is the velocity). As a part of a lab, pick a certain mass. Attach to light string (easily breaks) and pull the string through a...

Homework Statement Given basis |x>,|y>,|z> such that <x|x> = 2,<y|y> = 2,<z|z> = 3,<x|y> = i, <x|z> = i, and <y|z> = 2. Build an orthonormal basis|x'>,|y'>,|z'>. Each of the new basis vectors should be expressed in terms of the old ones multiplied by coefficients. Homework Equations |x'> =...

Looking at the image below, we have the function z^2=\frac{r^2}{a} yrevolving about y-axis. We know that y goes from 0 to "a". We also know the mass of the object (of uniform density). Do you think is my procedure correct? Do you get the same result?

I want to calculate the flow rate from flow coefficient (cv ) ,so i need the testing methodology and procedure .please give an idea to clarify my doubts.

PLEASE HELP I HAVE COMPLETED BACHELOR IN ELECTRICAL ENGG. AND I HAVE INTEREST IN ASTRONOMY SO, WHAT IS THE PROCEDURE TO STUDY ASTRONOMY IN INDIA AS WELL AS IN ABROAD?

This is the core idea- https://www.physicsforums.com/threads/complexity-analysis-problem-of-an-algorithm.812931/ I would like to write a formal psudoecode (latex), but as new writer I am having hard time to write, whatever I wrote is not easy to understand, so i would appreciate forum...

Homework Statement Question: A car goes down a ramp, and once it hits the floor it must travel 6 metres and then stop. Create the procedure in order to find the angle that the board must be to make this scenerio possible. You cannot test on both the floor and the board at the same time...

Hello! (Wave) I am looking at the following exercise. Use a Divide-and-Conquer procedure for the computation of the i greatest element at a row of integers. Analyze the asymptotic time complexity of your algorithm. Hint : Use the allocation procedure.I thought to sort the integers using the...

Hi anyone have the procedure to design the plate fin tube heat exchanger (air cooler) at defined mass flow rates and inlet / outlet temperatures , or anyone have an software package can be used for this purpose , please can share it with me

Homework Statement Knowing that HCl is strong acid we want to prepare HCl solution of pH=4.2.starting from a solution of pH=2.9.Explain briefly the procedure that should be followed to do this operation. Homework Equations pH=-log(H3O+) 3. The Attempt at a Solution [/B] I calculated: At...

Any ideas on how I can clean up the following? void HtmlParser::parseTag(std::string::const_iterator tagBegin, std::string::const_iterator tagEnd, node & thisNode) { /* tagBegin: pointer to the '<' character that starts the tag tagEnd: pointer to the '>' character that ends the tag...

Recently, for the solution of an integral I assumed, with a bit of optimism in truth, the validity of the following formula ... $\displaystyle \lim_{r \rightarrow r_{0}} \int_{a}^{b} f(r, \theta)\ d \theta = \int_{a}^{b} \lim_{r \rightarrow r_{0}} f(r, \theta)\ d \theta\ (1)$ The question is...

I know there isn't a "set in stone" step by step procedure to solve work problems, but if someone could give me a basic procedure it would be greatly appreaciated. When ever I read a work problem, unless it is a simple "plug in the value" works equation problem, I do not understand how to start...

I've found this paper: [physics/9712033] Closed Expressions for Lie Algebra Invariants and Finite Transformations and I've attempted to interpret it. In some representation, a general Lie-algebra element A = aiLi for generators L (repeated dummy indices summed over, like i here). det(I -...

Question:- A block of mass 10 kg moving with a velocity of 1 m/s collides with a spring of force constant 1000 N/m. Calculate the compression of the spring at the moment when kinetic energy of the block is equal to one-fourth of the elastic potential energy of the spring. Attempt:- Step 1...

As you may have figured out, I'm obsessed with spending exorbitant amounts of time making optimizations to my code. Can anyone help me cut down on the number of comparisons in the following text2words function? The intent of the function should be easy to figure out from the comments...

I am looking for pedagogical guides to fitting rotation curves with MOdified Newtonian Gravity. I want to study how to fit the luminosity data as well as the kinematic data. I have studied some published papers on MOND fits(Sanders, Mcgaugh, blok etc). But, they are not sufficiently elaborate...

Suppose I have a function that gets called and performs a procedure provided that a certain condition is met. One way to do it is, of course, like the following real example from something I'm working on in JavaScript right now. if (window.File && window.FileReader && window.FileList &&...

Homework Statement I have a boat moving at 2.3 mph towing a plankton net in water weighting 8.5lbs. I want the net to be towed at a depth of 10m from the surface. How much rope do I need to let out from the boat? Homework Equations basic trig sin=cos=tan The Attempt at a...

I have a system of linear differential equations with known boundary conditions. First of all what is the general solution to such a system? I know it is exponentials with the eigenvalues, but I couldn't find any place where the exact full solution was stated. Second of all, I want to write a...

This is technically a "homework" type question so I just need a bit of help. I'm just learning maple and writing a very basic procedure. I'm testing primality exhaustively by using the mod function. (Yes, maple has a built in procedure for this, but this is just an exercise). ISPRIME...

(i just need help with step 2) step 1.) normallize anyone of the given vectors (vector divided by the magnitude) step 2.) |e2> - <e1'|e2>|e1'> where e1' is the normallized e1.so in step 2, <e1'|e2> is the inner product which would yield... the component (a scalar) of |e1'> along |e2>?

Here's what I'm thinking. The sun is too bright to measure directly with our equipment. If I calibrate without a filter, and capture the reference spectrum with and without the filter, then I can model how the filter changes the spectrum. This way I can capture the sun spectrum with the filter...

Homework Statement Using the apparatus that I've drawn, I have to deteremine the % composition H2O2 in an unknown solution. 2. Relevant information H2O2 (aq) -enzyme-> H2O(l) + O2(g) or 2H2O2 -Enzyme-> 2H2O(l) + O2(g) when balanced The test tube (1) contains H2O2 solution with an...

Hey all, I was doing a bit of reading and ran into the following code (this is a function prologue for a main function, if you need more code or the actual C code let me know): push ebp mov ebp, esp sub esp, 0x18 and esp, 0xblackf0 mov eax, 0x0 sub esp, eax So I understand the...

I am asked to determine if a test procedure is unbiased. I have the power function and all of that, but I can't figure out what I need to do to determine if the test is unbiased or not. I am guessing I need to find the expected value of the power function or something, but what is that...

In Peskin and Schroeder at page 323 second paragraph the author state 'To obtain finite results for an amplitude involving divergent diagrams, we have so far used the following procedure: Compute the diagrams using a regulator to obtain an expression that depends on the bare mass (m0), the...

I'm posting this here because I did not get much help from the Chemistry section. Please read further. Anyone familiar with the Boehm titration procedure and calculations? I've done the titrations based on what I was able to gather from literature and the calculations but the results don't...

There is too much difference in literature regarding the procedure for Boehm Titration and my efforts to find the original article which describes the method developed by Boehm himself has not been fruitful. Boehm titration is an acid-base titration method which is used to determine the...

Having carried outan AC Resonance experiment recently, I find that I have missed a simple step in the procedure- or left it out of my lab book - grrr! For a parallel RLC circuit I was asked to observe voltage across the inductor (coil) at a constant current setting. I'm assuming the trace to...

Hi there, I arrived at the solution for a electric potential problem for a semi-infinite cylinder (there was a potential distribution given for the boundary conditions but that's not important here). http://i210.photobucket.com/albums/bb283/DidgeFrank/Cylinder_pot.jpg The solution is...

Hi, I have forgotten quite a bit of my vibration studies, so I have a fairly basic question. Essentially, when you want to find the natural frequency of a single dof system, you use ω=√k/m. However, does anyone know a general procedure (not problem-specific) for finding "k" that is applicable to...

I am working on a problem dealing with transformations of a vector and finding the basis of its kernel. Now I have worked out everything below but after reading the definitions I am a bit confused, hence just want verification if the procedure I am following is correct. My transformed matrix is...