Lab Definition and 1000 Threads

Hello, I am stuck on this post lab question. I have tried to answer questions 1 and 2 but I am unsure of my answers, could someone verify them to make sure I did this correctly? Also, I have no idea how to do number 3! I included screen shots of the problem. Thanks very much.

Homework Statement Alright, for my design lab I've gotten around and figured out how I'm going to record the data, but when I saw I needed a graph, I'm not sure what to do. I can prove my experiment to be true without using a graph. This is because I essentially have a weighted object with a...

Hello everyone, I'm working on a physics postlab due tomorrow, and I'm just really skeptical that the answers I am getting so far are correct, I just feel like the problems are designed to "trick you" because of the values you are looking for are on the graph. could you guys please take a look...

As an undergraduate, I have a choice between working under two different professors in the Physics department at the university that I am enrolled in. One is theoretical, so my work would be in helping derive equations, and the other has a lab (not a super high-tech one, but a lab nonetheless)...

So I did this lab: http://www.physics.ryerson.ca/sites/default/files/u11/exp/exppcs125/SHM.pdf Essentially, we have a mass that was attached to a vertical spring with as little friction as possible. We let the mass reach equilibrium and then we applied a force on the mass. The mass oscillated...

In my intro Electromagnetism physics class, one of the labs we did was really fascinating. I didn't have a huge amount of interest in it at the time so I don't remember the details of how it worked but now I really want to know. From what I remember the set up was like this: We hooked up a...

Homework Statement I have got a lab on 'braking distance of a wooden block' and I have to find an equation which fits our experiment and find the uncertainty. I have an equation but I can't find the uncertainty. This is how, I went about my lab... To find the relationship between the mass...

Homework Statement Using 5 different ammeters, you get the following data (all measured in Amps): I_{A} = 128 ± 2 I_{B} = 121 ± 1 I_{C} = 114 ± 8 I_{D} = 120 ± 3 I_{E} = 122 ± 4 Calculate the mean current and the standard deviation of the mean. Homework Equations Standard...

I have tried using coffee filters in the past but they seem to be too thick. The ones I have are 300 g / m^2. Just looking on wikipedia they say filters actually made for chemistry are 80 g / m^2. What other paper can I buy in a rush, in a pinch, from a place like Wal-mart that will be a...

I have my first real lab class this semester (intro to circuits), and I'm kind of nervous. In high school chemistry I always felt like a burden in lab class; I could do fine on the tests, but in lab I always felt behind. By the time I thought to do something my teammates were usually already...

Homework Statement I have to find f and d Here's the method of the lab Method: The length of the opening in the ray box was measured and recorded. The equipment was set up as shown in the diagram. The distance, x, of the tube from the screen was varied and...

My teacher told me plan and design about 4 labs, okay the thing is I'm not sure about the layout of P/D for physics labs. I know there has to be expected results, I'm confused I don't know what to put there. My teacher gave me a lab manual to try and guide me okay, in the book at the end...

Hi PF, I have a transistor circuit with me with IFT . Please see that if this circuit can be used for AM generation. Also please suggest the design procedure and working of circuit. Please point out any errors in the circuit. I don't know if I have to supply separate carrier signal(I...

physics lab practical! (Centripetal Force) Homework Statement I need help to come up with a lab to figure out the centripetal Force of a cork as it rolls down the ramp. Homework Equations Fc=(mv^2)/rThe Attempt at a Solution i know that Fc= (mv^2)/r ,but i don't know if the velocity in the...

Help. We are cleaning out our lab and under the dust are all kinds of old lab gear which look very cool and expensive but can't figure out what they are for. Only clue is Stansi Chicago on some of them. Is there an old catalog or website I can go to so I can identify stuff? If I posted...

NASA's current report on their EAGLEWORKS lab for spacecraft propulsion http://ntrs.nasa.gov/search.jsp?R=20110023492&hterms=eagleworks&qs=Ntx%3Dmode%2520matchallpartial%2520%26Ntk%3DAll%26N%3D0%26Ntt%3Deagleworks The actual PDF is here: http://hdl.handle.net/2060/20110023492 EDIT: A mod...

Homework Statement I am soo lost and I need a theoretical equation for force in relation with distance. My lab is about how the force used to pull an elastic band back affect the distance a block travels after the elasticband is released. I got my results and made graphs and everything and...

Homework Statement Hi, I am answering Question #3, and using the formula and variables above scratch area as reference on how to answer the question. Could someone please have a look and see if the problem I worked out came out correct. Homework Equations The Attempt at a Solution First I...

I need to get a 100 on this last Physics lab assignment, but I can't get this "rod" ...problem :( Help would be appreciated (a) L1 = (65 cm)/2 = 32.5 cm "CORRECT" (b) [(149 kg)(1) + (149 kg)(65 cm) + (149 kg)(65 cm + 32.5 cm)] / (3)(149 kg) = (149 + 9685 + 14527.5) / (447) =...

Homework Statement Simplified lab procedure: I have 3 wells (from well-plate) one with Cu(NO3)2 and a piece of Cu(s) one with AgNO3 and a small piece of Ag(s) last one with Zn(NO3)2 and a piece of Zn(s) Salt bridges are soaked with KNO3 All of the solutions above have molarity of 0.10M A...

The reaction I did for the lab is: H2SO4 + Mg --> MgSO4 + H2 In my graph, there displays the two variables - the concentration of sulfuric acid and the average rate of reaction in direct proportion. How do I explain the trend? I know I can explain this qualitatively using collision...

Homework Statement http://i.minus.com/i725WMEqetlYA.jpg Homework Equations y=Voy * t + 1/2(9.8)t^2 VFy^2=Voy^2 + 2gy Vox=Magnitude(Cos(Angle)) Voy=Magnitude(Sin(Angle)) The Attempt at a Solution No clue

I am so tired of writing lab reports. It's so ridiculously tedious and pointless. I've spent so much time doing things to fit into their stupid conventions. It's all monkey work - a monkey can do it, it requires too much time, and you don't learn anything. And of course, I'm stuck with two...

Homework Statement So I did an experiment today. The procedure is very simple. First I got a styrofoam cup with a lid, filled it with 50.00ml (V1) of water, assum density ρ = 1.0 g/ml Then measured the temperature of the water. T1 After that, I added 2-3 small pieces of ice, close the lid...

Homework Statement A ball is dropped down a hotwheels ramp attached to the end of a table. The ball is then propelled off the table and aimed at a pole with a "hoop". The ball must fall into the hoop. Find the height of the pole to make this possible. My instructor never gave us any numbers...

Hi, I'm currently doing a lab for gr.12 physics and it involves calculating the angle of elevation of a ramp by using information from ticker tapes. We're given a ticker tape and from that I made a position-time graph, velocity-time graph and acceleration time graph. Now I'm unsure where to...

I am an undergraduate student that started working in a research lab this semester and started out as a volunteer. It's my first research experience in a lab outside of the classroom and at this point, I have no idea how things are going. I work for the postdoc in the lab and have so far been...

Thermodynamics--Gibbs free energy: what can we actually measure in the lab? Hi everyone: I am getting back into thermodynamics after a long absence and have realized that there are basics I have never understood. If a patient person could either explain or direct me to an online resource...

I'm doing the prelab questions which require conceptual questions, not so much of math. The experiment is a typical ballistic pendulum lab - you'd shoot a paintball twoard a pendulum bob, and you measure the height the pendulum bob reaches after collision to calculate the related velocities...

Homework Statement Hi Lets say I heat 50g of water to 80°C. I take another 50g of room temperature water and put it in a bowl. Then I add this 50g of heat water to the bowl, the temperature in the bowl goes from 25°C to 48°C. What is the amount of heat absorbed by the room temperature...

THANKS, I ONLY NEED HELP #2 NOW, PLEASE 10/31/12 @ 9:10 pm bumpHomework Statement 1)If the fulcrum of a 0.1 kg meter stick was placed at the 40 cm mark and a 200 g mass at the 0 cm mark, would it be possible to balance the meter stick with a 200 g mass on the long side of the meter stick? What...

1. Physics Lab : Homework Statement design, run and report an experiment to calculate A) μs B) μk between a flat bottomed object and a flat surface ( include a section called "theory" in which you formally derive an expression for μs and μk ) im basically just having troubles deriving ...

Homework Statement For a conical pendulum: Construct a free-body diagram for the pendulum and derive an expression for the acceleration in terms of the gravitational field strength g, the length L of the pendulum, the radius r of the circular path of the pendulum, and the frequency f of...

there is a guy in lab and he's the most amazing guy ever... I've never met anyone like him. he is the most calm person ever... I can't believe it. and I have never seen ANYONE look so good in a lab coat... omg he could totally be a model, and if he modeled labcoats... omg... that would...

Homework Statement Okay, so I did a lab for my intro to mechanics physics class the other day and my lab report is due at 5pm tonight and I am having A LOT of trouble. The lab was a frictionless air track glider on a horizontal surface with a fixed mass M connected by a massless string to a...

http://www.foothillfalcons.org/ourpages/auto/2008/10/19/62799693/Rolling%20Ball%20Lab.pdf I am doing a lab in class where we set up a ramp on a table and measured the distance the ball travels on the horizontal part of the track. We then rolled the a marble down the ramp and did trials on...

In our lab we determined the charge to mass ratio e/m of electron by creating electron beam and making it spin in a circle using a magnetic field from helmholtz coils. According to the pasco lab manual for this experiment, the velocity of the electrons in the beam will be lower than theoretical...

Homework Statement Errors that might arise through this experiment: A puck upon a air table which makes certain dots with a specific length in between each of them for a 50 g mass and a 150 g mass, we need to find the acceleration, which i did and the coefficient of the friction that they...

Can we make gold from nuclear reaction in the lab? If yes, what are the nuclear equations?

This is a conservation of momentum/energy lab. We have an air track with motion sensors at both ends. Bumpers are staged to give elastic collisions. There are two gliders on the track. For this part the second glider remains stationary near the center of the track. The first glider is sent to...

Homework Statement Within this lab I was supposed to perform a virtual experiment and find the rate a ball dropped on the moon, mars, and earth. I have recorded all of my results in the table below. My problem is that my average velocity on Earth ended up as 8.9 m/s, and I thought that the...

Homework Statement I did a physics lab in high school the other week, and I did not look at the rubric for the lab report until now. The lab's purpose was to find the correlation between mass and swing periods, and length and swing periods. The rubric asks to graph T vs. m, T vs. L, and T^2 vs...

Can you please help with the following problems? Formulas would be greatly appreciated or talking me through a problem. Thank you! 1.) A mass of 40 kg suspended from a 48-cm long light string forms a simple pendulum. The mass swings through the lowest point of its trajectory with a speed of 2...

question 1) If "d" is the grafting constant "spacing between 2 slits on a grating), hwo can we obtain the ruling (number of grooves per meter) "D"? 2) Illistrate order of diffraction

How long does it take you to write a prelab or lab report for chemistry lab? And what grades do you usually get for these assignments? I spend like at least 2 hours writing a lab report because I want to get a perfect grade. Also, I spend quite a lot of time on a prelab too, because I'm scared...

Okay, I am working on my physics lab, and I have a few questions regarding it. First, we are asked to make a prediction: "Predict how you think the presence of a rubber band will affect the force felt by the force probe from the rubber band compared to masses hung directly from the hook?" My...

Homework Statement We did a lab in class where we had a cart and we had nothing on top of it. We added different forces at the end of a pulley to see how the acceleration differed with different forces. One of the questions on our lab was: We tried to keep the "mass constant". Why is this...

Projectile Motion Lab! PLEASE HELP THIS IS FOR TOMORROW. I am a high school student in Grade 12. We are currently doing projectile motion. We are using a marble. The teacher said that we should neglect air resistance because it is a very heavy marble. The marble, in the projector, is...

All that's left to write in my lab report is the conclusion, and I'm failing to understand what my professor is requesting of me. In the guidelines it says, "Compare your measurements to the expected values. State and discuss whether your results are in agreement with the expected...

Calculate the volume in (kg/m3) and density of a cube of unknown metal and its associated uncertainties. Then determine what kind of metal it is. Data is : side a= 19mm side b=19mm side c= 19mm. Mass of cube is 1.86g. Volume= a*b*c uncertainty ΔV= (Δa/a + Δb/b + Δc/c)V Density= m/v ΔD=...