Lab Definition and 1000 Threads

Homework Statement In class, we conducted a lab experiment in which we placed an object on the end of a piece of wood and lifted the same end of the wood until the object slid down to the bottom. We measured the height the wood was lifted to. (to assist in calculating Coefficient of Friction...

Homework Statement http://apcentral.collegeboard.com/apc/public/repository/ap05_phys_laboneerror_47485.pdf The above link is an updated version of the lab that I'm currently typing up. I have already gathered all data necessary: Time taken to travel 50 meters: @ 1.089 degree downward...

Homework Statement Well the program has several functions but I just really need help with reading a text file and splitting the data in the file into a one-dimensional array and a two-dimensional array The text file is like this... 21 1110 1.5 5.4 6.0 9.8. 8.5 8.3 5.6...

Hi, I want to get a job as a lab technician but I have a bad GPA in physics right now. Is my degree completely worthless; I know I won't be able to go to grad school now, but I would like to continue on to that road even though I be walking on a different path to grad school.

Homework Statement Stationary ball is placed 20 degrees to the right of the moving ball's trajectory. Both balls are of same weight. Collision occurs and balls part at 90 degree angle. We measured it and it was 90 degrees on two occasions. Explain why it is 90. Homework Equations...

http://www.google.com/hostednews/ap/article/ALeqM5gbl9HOrXrN5zLTpmFDu7ZnL88vTgD9B80NL80 And it seems nobody has a clue about the motive.

Homework Statement A plant takes in 20.24 kg/day Al, 24.04 kg/day S8, 48.00 kg/day 02, and 753 kg/day H2O. It's product stream is 254.3 kg/day AlSO4+12(H2O). The rest of it's water goes to "other things". How much water goes to other things? Homework Equations...

Q1: Why are titrations using permanganate performed in acid solution? Q2: A bottle containing a standard solution of potassium permanganateis found to have brown stains on the inside. Why will this potassium permanganate be of no further use for quantitative experiments? KNOWN: Potassium...

Homework Statement We did a pendulum lab and found Q then we were asked to find K from that. The professor gave us a formula K= 4pi2/m2 where m was the slope of a line on a graph of our periods vs lengthQ then stated it should be number we would recognize. I assumed maybe we were going to...

I have a serious question to ask of anyone who can be of help. It is necessary that I say a few things about myself first so please read on I promise that this has to do with physics. Ever since I was 6 years old, I wanted to be a nature photographer. I worked for 7 years after high school as...

Homework Statement A cart is released from rest with varrying masses down an inclined track. Determine whether or not mass affects acceleration in this case. This is what I calculated through all the data: θ = approx 5 degrees M1: Vavg = 0.7816 --> Aavg = 0.977 M2: Vavg = 0.8385 --> Aavg...

Homework Statement The experiment was changing dimethyl maleate into dimethyl fumerate, with the intent of being analogous to changing maleic acid into fumeric acid. In the experiment, we added 1 M Bromine in dimethylchlorine to our dimethyl fumerate, put the mixture in a hot water bath and...

Homework Statement Hi all. I did a lab in physics and am struggling with a question. The lab involved dropping an object that had clear and black bands on it through a photogate to determine velocity and time. The question I'm struggling with is... Looking at the RAW DATA, you should...

Coulomb's Law lab , please help, it do tommorrow Homework Statement Here is the picturehttp://img407.imageshack.us/img407/933/48460315.jpg Distance(cm) radius(cm) 0.2 1.4 0.4 1.4 0.8 1.35 1.0 1.35 1.2 1.3 This is...

Basically I am taking the lab concurrently with the class, unfortunately we learn how to do the lab a few weeks after we do it so its becoming quite depressing. I could probably slide out of it with a B or C and get absolutely nothing out of it. I should have waited to take it butI didnt realize...

Hi there, I'm not sure if I'm posting in the right place or not... So please forgive if I am. I did an experiment today on Uniformly Accelerated Linear Motion. We used an Atwood's type machine that used pressurized air to reduce friction. We also used photogates to time the movement of the...

Help with Stoich limiting reactant Lab urgent! 1. I need to find the mass of the excess reactant. This was a lab i did. so its BaCl2.2H20 + Na2So4 --> BaSO4 + 2NaCL. The data i have calculated thus far is. moles of BaSO4=0.0019 mol moles of BaCl2=0.0019 mol moles of Na2SO4=0.0019 mol...

Homework Statement All right so this will probably sound a little muddled but I'll try anyway. We conducted a lab today in class. We were given a hot wheels car, a meter stick, a ramp, and a stopwatch. We were told to find final velocity of total distance. We were not told how to actually...

hi im trying to do a lab on rotational inertia of a hollow cylinder i plan to roll a hollow cylinder down an incline and see how the inner radius, outer radius, and mass affects the final translational velocity but i am not sure what i can use for the cylinder to sufficiently control and...

Homework Statement For this exercise, four coins are tossed 32 times and the number of heads are recorded for each toss. Each toss falls into one of the following macroscopic states; 0 heads, 1 heads, 2 heads, 3 heads and 4 heads. Suppose the 32 tosses result in the following outcome...

Hi Everyone, I am an American mural artist currently working on public project at CERN in Geneva. I am painting a mural that will portray the ATLAS detector. Here is the website with several proposals for the project. http://atlasmural.wordpress.com/2009/ I am traveling to Geneva next...

So I have to do a lab, where I rank common household materials based on electronegativity. I am told to acquire two plastic combs and two pieces of string with which to hang them freely off a table. Besides that, I am to acquire common household materials such as rubber, wool, cotton, glass...

Hello everyone, I was just offered a job in a biology lab at Penn State (they do a lot with noninfectious bacteria and things like that, among many other things) washing glassware and hopefully moving up to preparing solutions and that type of thing in the future. Although I'm a chem major, I...

Homework Statement I = 2.89amps, r = 0.035m, resultant vector angle (55), proporptionality constant (2 x 10^-7) Homework Equations B = K X I / r , trigonometry, vector divisions.The Attempt at a Solution Hi, I'm just pasting this off my lab to make sure I've done it correctly. Thanks in...

http://www.sciencedaily.com/releases/2009/07/090720134239.htmI think this belongs in beyond, if not please move . ScienceDaily (July 22, 2009) — Even Albert Einstein might have been impressed. His theory of general relativity, which describes how the gravity of a massive object, such as a star...

Homework Statement "Calculate the grams of acetic acid per liter of vinegar" Homework Equations Previous problem stated the multiply the average molarity of diluted vinegar times 10= 2.7 M Vinegar (acetic acid)= H(C2H3O2) molecular weight= 60.06 g The Attempt at a Solution...

Hello, We did a lab in class yesterday and we are expected to write a report and graph our results. The lab was a simulation of the Millikan oil drop experiment. We used graphing calculators to do the simulation and took down 15 results. One thing i don't understand is how to come up with the...

1. When a student exerts a force on a lab cart that is carrying some masses, the acceleration is 3.0 m/s2. If the force is tripled and exerted on the cart with a total mass of one half the original, then the acceleration will be 2. f=ma 3. do i just times 3.0m/s2 by three? or do i...

So I posted similar thread a while ago, and it ended in me giving working at this lab a go. I've worked there two times a week since the start of the summer, and I can barely bring myself to go in. Next to my systems admin job, there is practically no reason to go to the lab. When I go to the...

Homework Statement A few weeks ago I did an experiment that involved empirically determining the exponent on the Stefan-Boltzmann law. I used a light bulb and measured the voltage and current across it for different voltages. Since P=k*Tn and R=cT (i.e. resistance of the filament is...

Anyone have a science lab in their home? I'm just curious.

Hello, I currently "work" on one of my physics professor's lab projects, basically I do some coding and make pretty graphs for him. Its not really physics, but as a sophomore I don't know enough physics to really be useful and I question any REU that claims to provide any more meaningful a job...

at Fermi lab they create anti-matter or I guess they don’t create it but they synthesize it , where do they keep it so it doesn't react with regular matter and produce light.

I'm trying to use an accelerometer to take measurements. I have it physically wired to my computer's DAQ board (a NI 6025E). According to the manual, pin 1 is ground and pin 3 is analog input 0. Therefore, this is where I have the output from my accelerometer going. I checked the signal at those...

I weighed out 0.2416 g disodium EDTA and diluted it with about 250 mL of H2O and stuck it in a plastic bottle to use for titration. My question is, to determine the molarity of my stock EDTA standard sol'n, is it just (0.2416g / 292.25 g) / 0.250 L = 0.00331 M? Or do I have to use the VOLUME of...

My notes say that Heinrich Hertz was the first to generate and detect EM waves in the lab. ... Uhhh, this might seem really basic to you guys, but what exactly are EM waves? Because I thought they were any type of wave that appears on the electromagnetic spectrum, including visible light...

Resistivity of Ge I'm doing this lab and haven't taken any SS physics so I'm expected to pick up some of the theory on my own. I am having trouble explaining the resistance vs temperature curve for n-type and p-type Germanium, i.e. why does resistance increase and then drop from around 290 K...

Hi guys, I need to find some textbooks which describe basic electronics. More precisely, I would like to learn 1) the components of a circuit (e.g. capacitor, diode, transistor) 2) how do these components work 3) The uses of these components 4) The standard appratus in a laboratory...

Hello, I'm a recent college graduate and I am applying to grad school. In order to be permanently accepted into grad school I must have a physics class with lab. While the school does offer a physics course with lab, the university is located an hour and fifteen from the grad school and I don't...

Homework Statement Hi, So I have a final lab in my college physics class. And the lab procedure is as follows: Note: The measured mass of the Bungee jumper is 0.25837 kilograms (258.37 grams). I have attached my data as an Excel file: . My question is, what formula does k follow (it is most...

Homework Statement When the pith balls are suspended, all forces are balanced. Assuming a mass of 0.060g for each pith ball, calculate the electric force which is repelling the pith balls. Hint: draw a free body diagram and apply Newton's 2nd Law seperately in the x and y directions...

Homework Statement I have to design a lab to calculate the delta H value of the enthalpy change of ice to liquid water. It has to stay at 0*C Homework Equations Needs to be in lab format but possible q=n(delta H) where n is the molarity The Attempt at a Solution I know the...

Hi, I'm a junior and I have been assigned a lab that I has completely me blown away! We are to find the intensity of our given light source on a solar panel at different distances. My partner and I understand how to complete the lab, but there is another part of the grade. We are assigned to...

Homework Statement Were doing this lab that is related to finding the specific heat and heat of fusion of water. To put the lab simply we filled aluminum calorimeters with water that's around 35°C. After that we took a handful of ice and it into the calorimeter full of water and measured the...

So, here is my data: TRIAL 1 TRIAL 2 TRIAL 3 MASS OF CAR 1 7.5 N 7.5 N 7.5 N MASS OF CAR 2 7.5 N 7.5 N 7.5 N TIME FOR CAR 1 (s) 8.63 8.31 9.40 TIME FOR CAR 2 (s) 7.50 10.72 8.78 DISPLACEMENT FOR CAR 1 (m) 305.00 365.00 348.60 DISPLACEMENT FOR CAR 2 (m) 387.50...

Homework Statement In a lab experiment, a mouse can choose one of two food types each day, type I and type II. Records show that if a mouse chooses type I on a given day, then there is a 75% chance that it will choose type I the next day and if it chooses type II on one day, then there is a...

Homework Statement Hey, For one of our final lab projects, we have to (less design and more build) an electric DC motor on a 6V DC battery. Restrictions/Requirements: No plastic parts can be used The motor must run for at least 60 seconds No simple motors allowed "not-simple" means, it must...

The lab we did today was to determine the relationship between radius, speed, mass, and frequency on the centripetal force in a given system. I am typing up my thesis now, and I am having trouble understanding something. Fc=(mv^2)/r = m*4*pi^2*r*f^2 Given those two equal equations for...

Homework Statement I know the answer to this question but I just need to know how I can prove this in a laboratory fashion... Here is the question: Why doe s a spring continue to vibrate and eventually come to rest when stretched and then released?? It has something to do with calculating...

Hi, I am a grade 12 physics student and as our final evaluation I must teach a section of our textbook to the class. The section I received was "Interference of Waves" and I must also create some kind of lab or demonstration for the class. My idea so far is to set up two speakers playing the...