Lab Definition and 1000 Threads

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...

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...

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...

This problem seems straightforward and easy enough, but I still want to check my answers. Suppose the pressure of the bulb (light bulb I'm guessing used in experiment) is 20 psi (absolute) at 20C. What would you predict the pressure to be at 0C? What would you predict would be at 100C? I...

1.) Using the table provided what is the change in thermistor resistance if temperature rises from 21 C to 30C? The ohm values for resistance are 120810 for 21C and 79,422 for 30C. I just subtracted the two numbers and got -41,388 ohm. I hope that's right! 2.) This lab involves a spool...

Hi PF! I have a lab report to do about a gas thermometer experience that I couldn't do. I'm very saddened about this because I should have manipulate mercury but the earlier group broke a container of mercury and so the class had to be disinfected and closed for some days. Basically it...

In physics class, we had to do a lab where a mass was attached vertically to a spring system. The spring went through simple harmonic motion. We stretched the mass and let go of it. We then used a software to determine the kinetic energy, the elastic potential energy, and the total energy. We...

Help with lab - "Speed of Sound in Air" Homework Statement https://www.learningpoint.org/courses/1/C37230/content/_259415_1/Lab%20-%20Speed%20of%20Sound%20in%20Air_1.pdf?bsession=2880270&bsession_str=session_id=2880270,user_id_pk1=7284,user_id_sos_id_pk2=1,one_time_token= Problem #1...

Okay, so I am writing a lab but I am quite stuck on one question. Using the average force of sliding friction from the data, calculate the coefficient of sliding friction. Average force of sliding friction: 0.32N The equation I used to calculate other static/sliding coefficients was...

What is the longest continuous running experiment , By continuous i mean some equipment is set up and left to run, not some thing like CERN where there has been periods of down time.

Hi, I wasn't sure I should post this here. We did a lab on series and parallel circuits and it went great until we got to the parallel circuit. The meters were connected in the correct way but for some reason, the current showed up on the meter as 12.8 (amps?) in each of the lamps. In...

[b]1. This is more of a general question about a lab report I'm doing: The purpose of this lab is to find if the acceleration of a person sitting on the end of a steel beam is moving at a constant acceleration, if they aren’t accelerating, or if acceleration changes with time. I have all my...

This is my first post here. I'm a senior in Applied Physics at Tufts Univ. Trying to work through a lab report and can't get this part figured out. The lab is a replication of the Cavendish Experiment. The situation is as follows: there is an aluminum beam of known mass, width, and length...

Homework Statement I am unsure how to do uncertainties for my lab experiment. For example, we are suppose to estimate or guess the uncertainty for like the time and measurements.. Is there any general rule for proper guessing? Then I am unsure on what to do with the uncertainties in math...

Okay, I have a lab write-up due tomorrow and I am completely stumped on one of my conclusion questions. The lab was an attempt to figure out the temperature of a bunsen burner flame. We did this by using a bunsen burner to heat copper and then immersing the copper into a cup of water and...

pendulum lab... relationship between straight-line equation and period equation? hello. i am really puzzled! on my pendulum lab i have to compare the period equation to the straight line equation, and i must know what part of the period equation represents x? y? and m(slope)? please help if...

I'm working on a basic physics lab report (not homework) and I'm trying to understand something better. We're establishing a relation between voltage and current using Ohms law. It goes as follows: We apply different voltages to two materials and record the current in order to determine the...

Homework Statement I performed a lab where we designed an electric circuit on paper and then calculated the Current, Power, and Voltage for each of the resistors. We used one power supply. Then we built the circuit we designed and then measured the actual Current Power and Voltage for the it...