Lab Definition and 1000 Threads

Hi all, I am currently a student (undergraduate, third year) on a 4 year degree in engineering. I would like some opinion on lab reports, for which I received poor-ish results (60% average). Would someone here be willing to take a look at my write-ups and give me a honest opinion?

Homework Statement Good Morning, my teacher is making us redo this lab with data he collected. I was wondering if someone could check to see if I did it right so far. I have to graph the left side of equation B (in the spreadsheet) and the same for A. then I have to find the moment of inertia...

Homework Statement i have some questions and some of them i can't answer. The questions are form the "Spectrum Techniques Lab Manual Student Version" the link for this manual...

Hi all! We're trying to dissolve a mixture of organic matter with a solvent that is highly volatile. Currently, we have to shake the solution very frequently to ensure the organic matter doesn't settle down on the bottom of the flask. However, it takes a REALLY long time for the organic matter...

What's a good place to start learning about LaTeX and how to use it to write my lab reports?

Homework Statement Basically, we did a centripetal acceleration lab where a hanging mass(s) was connected to a string, run through a tube, and connected to a rubber stopper. The force of gravity of the hanging mass is what supplied the force of tension to the rubber stopper for its centripetal...

Homework Statement Create a secondary graph that allows you to graphically determine the decay constant, k, for the observed nucklear decay of 137Ba*. Homework Equations 0.693/k = half life Something with an LN in it The Attempt at a Solution I have no idea what it means by "secondary graph"...

Homework Statement to investigate the variation of current and potential difference for two identical filament lamps and use the results of the experiment to suggest how current varies with potential difference for any number of identical lamps wired in parallel. it is suggest that i=kv^n...

Homework Statement [/B] we used a laser pointer as a light source Homework Equations I'm having trouble looking for an error in the experiment. The Attempt at a Solution

So we did a lab where we mixed 10 ml of 95%ethanol with 10 ml of water and the volume of the mixture we measured was 19.60 ml. Even though we know the volume of the mixture is 19.60 our teacher wants us to calculate what the volume of the mixture should have really been and compare it to what we...

Homework Statement Given a system composed of a convergent lens and divergent lens (separation d between), how do I best calculate the focal length of the divergent lens? What is the best way to set up the system (converging lens first? diverging lens first?). There is plenty of documentation...

Homework Statement Determine the exit speed(initial velocity) of a marble exiting a launcher shot from a table. The height of the table, distance of the x component and the time can be measured. t=? Vi=? Vix=? Homework Equations d= vi * t + 0.5*g*t^2 Vi^2=Vix^2*Viy*2 The Attempt at a Solution I...

I need help in understanding how to conduct this experiment. I found this lab report online but it is confusing https://www.google.ae/#q=metacentric+height+experiment http://site.iugaza.edu.ps/mymousa/files/Experiment-2hydraulics-lab-.pdf I am finding it difficult to visualize the...

Homework Statement Would it be possible for someone to look over the parts of my lab report. If there is anything that I did not mention in the abstract, please inform me. I wasn't sure how I should end the paragraph. My teacher wants us to write our opinion on the success of the experiment...

I'm serching around the web to find the best laser poiter (with real safety class). the below one is the only thing that I could find: https://www.amazon.com/dp/B00NQCF35G/?tag=pfamazon01-20 Do you know any other brands suitable for educational goals? we need to use laser pointer for some...

Hi everyone. Thank you for taking the time to contribute to this thread :) How much does it cost to start a relatively small (750 square foot) biorejuvenation technology research lab? What kinds of materials would be needed to say, culture cells, synthesize proteins, or mess around with biology...

Homework Statement So I am currently in my final year working on my thesis. Below is the details of my thesis topic: Metacentric height (Computational) It is a simple matter to determine whether a body will float in a liquid, it is not so easy to determine the orientation at which the body...

Homework Statement I'm not really sure what goes here just yet because my lab on "e/M" is rather dry, and void of any meaningful information. Homework Equations Not sure yet. The Attempt at a Solution I do have an attempt, but it needs work. Alright, so my problem with this lab is that it...

Actually, I am going to do a centripetal force apparatus lab tmr morning. Here I get some pre-lab questions. In this lab, we are going to use economy force sensor (as I know there are 2 types, but it doesn't matter). There is one question related to this sensor... It says "The 'Tare' button on...

We're going to write a new lab instruction for this laboratories: 1. Fundamental Physics I: Dynamics 2. Fundamental Physics II: Electricity and Magnetism 3. Fundamental Physics III: Oscillation and Waves 4. Geometric Optics I'm willing to read lab booklets of different universities to know...

I will be graduating with a BA in physics and BS in Electrical Engineering in May. I want an optics PhD. I attended an info session on Sandia National Labs at my university, and the recruiters made me think about a PhD program through a national lab. If someone has experience with the National...

In this experiment you will use the Hall Effect to measure the strength of magnetic fields. Which of the following are true statements about the Hall Effect? (Select all that apply.) The Hall probe that we will use in this lab is made of a semiconductor. (check- i know this is one) The value...

I am doing lab for physics and I have doe problems. I will appreciate any help thanks. 1) How do you calculate the error in raw data? 2) How do you use this equation Δmave = (mmax – mmin)/2 I have example but I have no idea where do you get the max and min. This equation is for calculating the...

Consider a series RC circuit with an R = 3.0 Ω and a capacitance of 12 µF being charged to a voltage of 5.0 V. (Note, you will not include units in your answers.) If you wished the charging of this capacitor to have a vertical displacement of 4.0 DIV from 0 charge to fully charged, what value...

Hello! I need a little help! At school we did an experiment. We took cooper sulphate (CuSO4.5H2O) and heated it.Then we tried to see whether there are five moles of water to each mole of cooper sulphate. I am asked to "start with a brief statement of how the experiment allowed you to determine...

I have a lab I teach that has evolved over a long period of time. It's described on p. 14 of this pdf: http://www.lightandmatter.com/lab_205.pdf . Briefly, it involves setting up four force sensors around the circumference of a circular table. We tie strings to their hooks, and they all pull on...

I don't know if this is the right forum to post this, please move it if it's not. I am studying physics at university, and have to prepare a special research project in Lab 1 (Elementary mechanics) by my self and then present it to the rest of the group for a final grade in the course. The...

Dear all, I am a sophomore at one of respected public hresearch university; my major is a microbiology (and I am also considering double major in the chemistry). My future goal is to go to the graduate programs in medical microbiology/virology or chemical biology with focus on the virology; my...

I have attached the lab right now I am stuck on proportional error in multiple variables I want to take the lab step by step so i can learn how to do calculate all the variables from now on. I have lab partners during the lab but I am completely clueless when I am working on it on my...

I'm currently working in a very reputable lab and am wondering if it would be wise to switch to a smaller lab if the opportunity were to arise. The reason I am considering this is because in my current lab I do mostly programming and some 3d modelling. Whereas perhaps in a smaller lab I...

1. Okay. So, my lab is to bounce a ball at a given high while i calculate the time, mass, and different heights. Given these I find the PE, Velocity, and Difference in PE. I've gotten most of the lab complete but there is a final question that asks "If you wanted the golf ball to rebound to a...

Homework Statement Graphically and mathematically model the relationship between position and the time for a motorized lab car. The definition of position my teacher gave us is: "Where an object is located with respect to a coordinate system. (measured in meters)". Everyone else in my class...

In a lab measuring the charge to mass ratio of an electron I am having trouble with the error analysis. Specifically, this lab measured the radius of a curved path of an electron in a magnetic field (generated by Helmholtz coils with a a current 'I' running through them) with the velocity of the...

The best laboratory vacuum has a pressure of about 1.00 x 10-18 atm, or 1.01 x 10-13 Pa. How many gas molecules are there per cubic centimeter in such a vacuum at 293K? PV = nkT P/kT = n/V = N (# of molecules per cm^3) Since V is typically in units of m^3 or liters, should I make my...

Hi, I was reading Dirac (Principles of QM, section 2 page 7) and he mentions using the mineral tourmaline in a polarization experiment. I was looking for some more information on how to prepare tourmaline for use in the lab (or how it used to be used). In general, any home/school experiments...

Hello all, as a recent graduate and a new teacher, I am living in Honduras and teaching the sciences in a high school setting. I did not study to be a teaching by got my bachelors in Spanish and Physics. I am working at a bilingual school and my resources are extremely limited. My question is...

Homework Statement The problem is I need to estimate the mass of a (solid equally distributed mass) disc which has an axle on which a string is tied and then attached to a (hanging) 1.022 kg mass. We wound the wheel up moving the hanging mass to a height of 0.64 m off the ground. At this point...

I'm a student of physics at the University of Edinburgh in the UK. I'm going into my third year of a four year bachelors course. I now need to decide whether to continue with an ordinary physics degree or whether to choose the theoretical stream, which involves replacing all remaining...

Homework Statement Calculate the relative uncertainty in the mass mass (M) = 1.0 grams Homework Equations \frac{\delta M}{M} The Attempt at a Solution \delta M = \pm0.05g \frac {0.05g}{1.0g} = 0.05 or \frac {0.05g}{1.0g} = 0.050 Which one has the appropriate amount of sig figs? thanks...

For two-body decay, in the center of mass frame, final particle distribution is, $$ W^*(\cos\theta^*,\phi^*) = \frac{1}{4\pi}(1+\alpha\cos\theta^*) $$ We have the normalization relation , ##\int W^*(\cos\theta^*,\phi^*)d\cos\theta^* d\phi^*=1##. And we also know that in CM frame ##p^*##...

Homework Statement We set up a spring with a weight and displaced the spring from equilibrium position. Using a recording device and a motion sensor, we found various data that I have put in the attached table. When doing calculations for the lab, we ran into problems, but I simply want to...

Hi, I'm looking for a good chemistry lab manual/book that discribes how the general lab equipment works (with pictures and illustrations) how to use it, and perhaps some good lab techniques. What books can you all recommend?

Hello everyone, I teach Physics at a local high school. I designed a simple lab to determine the relationship between net work and kinetic energy. The diagram is shown below: In this experiment, students release the cart from rest, while keeping displacement constant. A Vernier motion...

Physics Lab -- greatest common factor between all these numbers Homework Statement Hey, how can I find the greatest common factor between all these numbers? Please reply as soon as possible, it is an assignment due tomorrow. 27.69 3.15 0.59 4.71 18.08 22.84 31.08 19.11 21.91 9.7 38.78 42.82...

Hello, while my question is not from a textbook, it still has to do with a lab I'm creating. My lab was to view the efficiency of rotational KE of a bike's pedals to the KE of the bike itself. Using 1/2*I*ω^2 and 1/2*m*v^2 to find KE, I seemed to have run into a problem. The KE of the bike was...

A first time study, has implications for duplication of experimetal animal studies, http://www.ibtimes.com/mice-men-lab-rats-fear-male-researchers-might-affect-experiment-results-1577431

Homework Statement 1. Two firecrackers explode at the same place in the laboratory and are separated by a time of 3 years as measured on a lab clock. (a) What is the spatial distance between these two events in a rocket in which the events are separated in time by 5 years as measured on...

Homework Statement Hello, I'm looking for some help on how to perform some lab calculations. We recently did a lab on the Preparation of Geometric Isomers. We were preparing the Cis and Trans isomers of butenedioic acid, i.e Fumaric and Maleic Acid. The Maleic acid was done by reacting...

Hey everyone, Recently I have been working on my teaching degree and doing field experience. Because relativity is part of the Georgia Science standards, I had to make a relativity lab. The experiment is actually measuring time dilation using GPS in the phones similar to Hafele–Keating...

The purpose of the lab was to measure, and also calculate, the induced current in a disconnected coil, due to a second coil connected to a power supply. Involved magnetic fields and electric fields (I think. For the purposes of this lab, the magnetic permittivity is 1.26*10-6, the number...