Errors Definition and 328 Threads

Could you please help me find experimental error in bottle rocket experiment that could have affected my results. The experiment is where a bottle gets filled with water, a third of their volume and then they get pressurized to fly in the air. So could you please find me experimental errors...

Homework Statement We had to basically modify a few variables in the given code and then shoot it out with a valid output. I decided to have some fun with it. However I get a strange syntax error, here is the code: //Conditionals controlling the cookie response output if(cookies...

Getting "connection reset" errors Today I've had several errors when following links around the forums, but refreshing the page works immediately. The error occurs immediately (not like a timeout) and the "errors details" say that the connection was reset by the server. Here's what Google...

I believe there are a number of errors in my physics correspondence course and I plan to include a page listing them when I write my final exam, but I would first like to make sure they are errors and not due to my lack of understanding. 1) "The coulomb is defined as the amount of charge...

Hello, Is there any way to know where exactly are the errors occurred in Mathematica? For example, I have the following error in my long code: During evaluation of In[359]:= \[Infinity]::indet: Indeterminate \ expression 0 ComplexInfinity encountered. >> During evaluation of In[359]:=...

Hi there I compile the following Fortran program but it shows more error it output file. can you help me. with Regards, jamshid INCLUDE '(SCOHLP)' INCLUDE '(PAPROP)' * * ******LOGICAL LFIRST ******SAVE LFIRST, ZMIN, DELTAZ ******DATA LFIRST /.TRUE./ * Initialization...

This isn't a set problem itself, rather it is just a small part of my chemisty coursework. I have two values with known errors a) -0.000379272 ± 1.75895E-05 b) -0.000576206 ± 4.13448E-05 What happens to the errors when i average the two values?

Hello! I've got a question that asks what is the most likely reason that my experimental absortion plot for lactate differs from the theoretical. I figured it's simply incorrect volumes transferred via the pippette. Could it be the other chemicals in the solution? Although they're 'not supposed...

I've a circuit with a power supply of 1.95V and a resistor 100ohms. To measure the current through the resistor, I use an analogue multimeter. This turns out to be 1.9x10^-4 A. But, from the calculation using the formula I=V/R, I should be 1.95x10^-2. Shouldn't an analogue multimeter be accurate...

Homework Statement The problem let's us graph and give values for s(m) (distance) t(s) time and delta t (s) velocity. After plotting my second graph (including error bars) I used it to get the slope and the acceleration. But then it asks to determine the experimental error. Is there any...

I didn't really know on the forum to put this, it isn't really homework or coursework, but it is a very small part of a project I am doing for uni, so essentially it could be worth marks so here it is, anyway... Homework Statement Im rubbish at combining errors and was wondering if someone...

I have a TI 83 Plus, and i wanted to put some programs on my calculator. But the problem is, every time i install my TI connect software and Graph Link, and connect my calculator, it says that the driver not found. no matter what i do, it always says that driver not found. I go in the TI connect...

Hi, Here's a tricky sort of general problem I've been encountering quite a bit lately. It's all about errors that vary slowly. So: the way I've always been taught to deal with errors is to lump them into two different categories: "random errors", that are independent between measurements...

Homework Statement I need to find the total number of water molecules per copper sulfate molecule. The answer is 5. But, I keep getting ~4 with the average of two dehydrating experiments. 2. Homework Equations with my Attempts I am just using simple factor equations for these. I am...

I have cracked open Baby Rudin for the first time and I would like to ask if anybody knows of an errata that is on the "web"? I cannot find one. I wanted to print one out before I get in too deep and hurt myself. Also, on page 2 (that's right, only pg. 2) , (4) has an exponent in front of a...

Do you do it? I tend to not do it as long as it looks fine.

Homework Statement My task was to determine the focal distance and the magnification of a converging lens. I've done everything as stated in the procedure. The problem that i have is that when i am calculating the magnification in two differents ways i.e M1=b/a and M2=h'/h where a=distance...

Hi, I don't know if it's some mistake that I've been committing without realising it, but the Latex facility provided by this forum has given me no end of trouble. The following are two major problems I've faced: 1) Post preview generates a database error if there is too much latex in one...

how come whenever I use latex...for some reason two of the latex have errors but the others always work when I preview...if I try deleting those two which have errors than some other two latex have errors then...why?any way to around the problem?

A three phase and three wire energy meter has installed in a medium voltage network with a lot of third harmonic current and unbalanced load (approximately %10). As you know, any distortion in sine wave and deviation of rated frequency in AC electrical system may be cause the increasing of...

Am writting programs in c that contain double matrices. When i run it and input data, an error appears on the screen scanf: floating point format not linked Abnormal program termination. Is this a problem about my system? I guess. Actually i am using vista premium. What can i do to solve...

Hi, I have to describe the famous Newton-rapshon algorithm for finding a root of the function this is what i came up with, i aint not familiar with MATLAB and programming at all, so this is somewhat a melt from a lot of MATLAB tutorials, I don't master the code, but what's really a challenge...

if you want to help my lab is on physics and baseball and the elasticity of the collisions between the ball and the bat email me at roxysurfgirl916@yahoo.com

A 16-bit word is coded in modified error correcting Hamming code and after that is stored into a cell of the main memory. After some time a program reads the cell and the following word is read into the memory data register: 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 1 Perform all...

what are the possible unavoidable errors when changing a hydrate to an anhydrous. the procedure called for heating the hydrate in a crucible a few times and cooling to room temp in a desiccator until mass measured was constant. also why wouldn't this procedure work for all hydrates? thank you...

I am writing a lab report on Newton's second law...:) I got some errors while calculating the slope (mass). What factors could bring out those errors? and How can they be imporved? I don understand what i m suppose to approach...If anybody cud help me with that...thanks

Let's assume we live in a simulation, but for whatever reason the physics of it are not modeled perfectly. Perhaps the computing power is insufficient to reproduce everything with 100% accuracy. Let's say that as you look at smaller and smaller things, the simulation begins to give...

My parents PC is having a problem I've never encountered before and I have no idea what could be causing it. Just wondering if anyone here had experienced anything similar. The PC is running windows XP service pack 2. It seems to start up fine but when you sign into your desktop there are...

[SOLVED] Linear approximation Homework Statement Juan measures the circumference C of a spherical ball at 40cm and computes the ball's volume V. Estimate the maximum possible error in V if the error in C is as most 2cm. Recall that C=2(pi)r and V=(4/3)pi(r) Homework Equations deltaf -...

I recently purchased an HP50G as I caught my TI-89 giving me incorrect results when solving simultaneous equations. However I can't get the 50G to do anything but tell me invalid syntax. I am using MSOLV as follows: MSOLV('[x/60+x/15+(x-y)/5-15=0][y/2+(y-x)/5+5=0][x,y] This is the syntax...

Homework Statement What are the percentage errors for lengths measured with meter rulers and potential differences measured with voltmeters? I have a question asking me which of the two measurements can be measured more accurately, based on which one's percentage error is lower. Homework...

Do you misspell words or make other errors when you know better? For example, I constantly find myself going back and changing too, to to, or two, etc. Twice now I caught myself wanting to spell delusional with a dill.. :rolleyes: I have no idea where that one comes from. I have also noticed...

I did a titration lab to find out the weight percent of CO3^2- in an unknown sample which contains only NaCL and CaCO3^2-. My results were about 29% for the first titration and 18% for the second titration; I was wondering the types of error that led to this ~10% difference. Some of the...

i have to think of different ways to test ohms law but could only come up with using an ammeter and voltmeter..the typical experiment that is seen all over the internet. what way could i test this law using basic everyday things? and what errors could happen for the typical experiment? could...

Homework Statement the mass of a particular sample of rock retrived from Mars is m=772.2+or-0.2g. The sample is in the shape of cylinder of height h=10+or-0.1 cm and base radius r=2.5 +or-0.1cm. calculate the density of the rock sample in units of kg/m^3. You must state your result in the...

I want to know how to treat propagation of errors in general. When the transformation of variables is a transformation of $R^n$ to $R^n$ it simply involves a jacobian: g(\vec{y}) = f(x(\vec{y}))|J| With J_{ij} = \frac{\partial x_i}{\partial y_j} (see...

About the so-call "two errors (mistakes)" in Misner-Thorne-Wheeler If I remember correctly, Kip Thorne once said that "there are two errors (mistakes) in Misner-Thorne-Wheeler". I am wondering if anyone know exactly what errors these are (he mentioned one of them during the same talk, but I...

Hi all, I was wondering if anyone has ever run into ctype_base.h errors like: '<anonymous enum>' is/uses anonymous type.' error: trying to instantiate 'template<class T> void operator|(PUP::er&, T&)' some sites that i have visited say its an error with gcc4 GUI-mandriva sfwr-charm++ for...

Homework Statement In a star Trek episode, a space station orbiting a planet blows up. The chew of the Enterprise simultaneously hears and see the explosion; they realized that tehre is no chance for rescue. If you have been hired a consultant, what two physics errors would you have found and...

http://www.livescience.com/othernews/070406_past_lives.html I once agreed to try regressive hypnosis for a local author and hypnotist. It sounded interesting and it was free. I visualized and recanted four or five "past lives" thoughout the session. Although the images were often vivid...

Hi, When I'm doing an experiment, If the result of the experiment was some points, which I interpolate to create the linear function: y=(a/b^2) x+c while y is a function of x: y=f(x) If the standard error in y was (S), How can I calculate the error in b? Thank you

Ok, so semi-irrelevant information out of the way first - I'm writing a program that will give a basic model of the solar system - taking into account interactions from the planets on each other. I can get my program running when containing the individual starting points of each of the...

Hi. I am working on an assignment writing the implementation for a class of playing cards. http://www.pic.ucla.edu/~nathan/cgi-bin/moin.cgi/la1#head-111d7fc9df65f327018fa94234ab0b23c0857e98 Here is the header file that we were provided. //filename card.h #ifndef CARD_H #define CARD_H...

In a report should I be quoting uncertainties as 2.435(36) m or 2.435 +- 0.036 m. It seems the first way is usually used when quoting a standard deviation error and the second when quoting a resolution error.

Well when calculating Math I sometimes make errors (we all do of course) but some of them are because I do not know the 'laws of math' (do not know what you call it in English). An examlpe. \ln{2}=x^2+x+k \Leftrightarrow e^{\ln{2}}=e^{x^2}+e^x+e^k \Leftrightarrow 2=e^{x^2}+e^x+e^k But...

This is page #293 of the 1-st volume from 2-nd edition of Apostol's "Calculus & Linear Algebra". Well, the question goes like this: Can you find a flagrant error in this page...? Daniel.

I recently made a Type K thermocouple (Chromel-Alumenel type) and am trying to see if it is working correctly. I do not have the necessary equipment or time to use cold junction compensation, so I was told by my professor to just test the temperatures and voltage readings at room temperature (20...

Give three sources of error in your calculation in Part B. Which of these contributions the greatest source of error? Explain. In part B i did 6 steps in determination of Faraday's Constant. 1. I marked two copper strips (to distinguish them) and weigh them 2. Attach these to the...

A quantity 'X' has a standard error 's' if 'X' is inverted ie. X^-1 what do I do with 's'?

Here's the problem: Determine the degree of Maclaurin polynomial required for the error to be less than .0001 if f(x)=cos(2x) and you are approximating f(0.6) I really don't know what I am doing. Here's what I've tried to do: Rn(.6) = ( (f^(n+1)(z)) / (n+1)! ) (.6)^(n+1) I don't...