Investigation Definition and 110 Threads

Hello, I was just wondering if anybody could give me any ideas about a possible direction in a Physics issues investigation. I am looking at choosing one around nuclear energy and the issues of radiation. Any help or interesting sugestions of avenues in nuclear physics, and or possibe guiding...

Homework Statement We have to investigate a factor that affects friction. For my expiriment, I placed a wooden block on a flat surface, and increased the force pulling the object using a Newton meter until the block moved. I increased the mass and the force required to pull it increased...

Hey guys, I'm new to this site, and am a university student studying Electrical and Electronics engineering. I just completed a design project controlling a BLDC motor (pretty low powered at 60V, and giving output rpm of about 6000rpm). Now I had an idea where instead of using a single BLDCM...

I have to finish my investigation and the outline has something called a Theory review. It defines it as: a story that generates interest in the reader for the field of your research and link to practical investigation to follow.:confused: Now this maybe very simple but I'm not sure what kind...

So we need to make a practical report and I'm not sure how to do it. I've learned the basics like lift equals weight and thrust equals drag.. and then the teacher made a model wind tunnel in class, we then got air speed(km/h) and its mass(g) etc. for it then we had to convert them to life and...

This term in physics we are being assessed on designing an experiment of our choice (and topic), obtaining the data and analyzing/concluding upon it. At my school this is known as an extended experimental investigation. Basically I am looking for some ideas or even topics that will have enough...

Homework Statement I'm currently working on doing an investigation on the relationship between kinematics and base running techniques in baseball. I'm trying to find out if "rounding the bases" is better than running straight to each base and turning, but I haven't found how I should preform...

CENTCOM investigation: Killed Reuters cameramen were in company of armed insurgents I note several threads on this subject have been closed by moderators. I believe this post meets PF guidelines, particularly with regards to citation. Yesterday, US CENTCOM released its 2007 investigation into...

Hey everyone, New to the forum - I apologize if you already get heaps of posts like these... Im in Year 12 Physics, and out first assessment piece is related to the physics of sport. It's a typical physics project -> hypothesis, testing, report...etc We're looking at anything relating to...

Homework Statement Suppose that |f (x) - f (y)|  (x-y)^2 for all real numbers x and y: Prove that f is a constant function. Homework Equations No relevant equations.. The Attempt at a Solution I'm really stuck..i'm thinking you're suppose to use mathematical induction.?

1 = -1 ! \sqrt{}a.\sqrt{}b = \sqrt{}ab When a = b = -1, \sqrt{}-1.\sqrt{}-1=\sqrt{}-1*-1 i*i = \sqrt{}1 = 1 i2 = 1 -1 = 1 Had i gone wrong anywhere??

Hi Guys, Ok, I am taking on a mechanics investigation based around a snooker/pool/billiards style shot. I plan to model the ideal shot to get out of a snooker and pot a ball. In order to do this I plan to find the coefficient of friction between the table and the ball and the coefficient of...

Hi all, I just wanted to post some new links regarding a recent topic of large debate, the viability of these systems. Assuming that these systems were installed properly, then it appears that HODS do not work at all. From the Popular Mechanics website--Published on: August 7, 2008...

Homework Statement I am currently carrying out an investigation into all the factors that affect the resistance of a lightbulb. Firstly, I have done a graph to show voltage against resistance for a 24W Lightbulb to see if Watts affect resistance, however my friends and teacher all told me to...

Hi everyone, I have an investigation to carry out for my Junior Certificate in Ireland. What I'm not sure about is the link between heat and temperature. I know that heat is energy, and temperature is the measurement of this energy, but I'm not sure what the link between celcius and joules is...

I was looking into infinite limits and sequences and looked at the Limit Lim {f(n+1)/f(n)} n->∞ I was looking to see if there were any significant patterns and i couldn't even solve. It was proposed to me by a friend am I just having a bad case of limit block or is it as...

in my chemistry lab we had a kind of color test. the thing was supposed to come as blue according to the lab manual. . It did not. to me there was no color.however my teachers forced me to believe what i was looking at was blue,supposedly "it is very faint". that was not mentioned in the...

in my chemistry lab we had a kind of color test. the thing was supposed to come as blue according to the lab manual. . It did not. to me there was no color.however my teachers forced me to believe what i was looking at was blue,supposedly "it is very faint". that was not mentioned in the...

Hey everyone I'm a physics student doing my last year of high school in Australia. For an assessment task I have to do a practical investigation on electric motors and generators but I am a bit lost on this subject. I need a few ideas that are easy to understand and prove/disprove using a...

Homework Statement Consider the parametric surface r(u,v)=<vsinu, vcosu, v^2> a) Identify the shape of the surface b) The point (1,1,2) is on the surface. Find: i) A grid curve wit hv constant that contains this point ii) A grid curve with u constant that contains this point c)...

Homework Statement a pendulum was set up and measurements were made to enable the mechanical energy to be calculated at the start position and the lowest point of the pendulum's swing. The mass of the pendulum bob was determined on an electromic scale, and its diameter was measured using...

1. The following information describes a current-balance investigation. The current in the solenoid that generates the magnetic field was held constant and the length of wire in the end of the loop in the field was 0.050 m long. i168.photobucket.com/albums/u173/pleasetheworld/p3.jpg a)...

Next year I have to do and Investigation for Advance higher physics. I was wandering if anyone had any ideas on what I could do it on. I don't want it to be as basic as measuring the refractive index but not as hard as to split and Atom:eek:. Iwould like to here anyones ideas.

The pay phones in which we have to drop the coin in and then we are able to make calls. These are often evident at railway stations and other places. Does anyone have any idea as to how they work?

Just for the technical side i like to watch air crash investigation, it has all ways been an interest to me as to how things can fail, but i seem to be getting all sissy and weeping watching the programs, surly this not natural for a male.

[SOLVED] Cantilever Investigation 1.Hi, I am writing a report on cantilever oscillations, my experiment involves fixing different cantilvers e.g. a ruler to the end of a table then measuring the period and height of oscillations while varing the mass attached to the cantilever, and other...

My teacher has given me a Extended Experimental Investigation to do that requires physics. I know a bit about it (the very basics) and I'm not sure on a few things about it. For my task I have forgotten to measure my displacement and I was wondering if anybody knew a way I could still find it...

As part of my Advanced Higher Physics course I am require to investigate an area of physics not covered by the syllabus. My first thought was to use telron tubes or similar in order to determine the charge to mass ratio of an electron. However it has just come to my attention that this has in...

Investigation: Factors Affecting Friction Design and complete an investigation to determine how the following factors affect the force of friction: -Wieght - Surface Area -Speed You will need to measure the magnitude of the force of friction. Since the magnitude of the force that...

i have an assignment in physics due tommorrow and i would really appreciate it if someone could explain to me how acceleration, velocity and displacement are used to investigate accidets. Or if you know of any great sites i could go on to find this information would be very helpful. please...

Homework Statement I have recently carried out an investigation on how a trolley is decelerated by a material "escape lane" similar to how racing cars are stopped off the racetrack. I have already looked at the relationship between the entry speed and the distance traveled, this was a...

Special lamps may be purchased to help plants grow indoors. These lamps produce light with wavelengths comparable to natural sunlight. A manufacturer wishes to check these lamps by measuring the out put of the lamp at different wavelengths. The above is the scenario given :smile: You are...

Homework Statement Design and complete an investigation to determine how the following factors affect the force of friction: weight surface are speed Homework Equations The magnitude of the force that is provided by an elastic band is directly related to the distance the elastic...

Hello, I am a Forensic Investigator, and I am seeking help solving a case involving a possible (and probable) extension cord failure. This failure caused a fire and very large lawsuite. I need help determining the heat release potential of this extension, given the load on the end of it...

Ontario, Canada. Today I was escorted to the office of my school by my VP where there was a detective and another VP (not trying to be dramatic). Now to give you the info, my school about a month or two ago had a lockdown due to a believed intruder. So they show me some footage from the...

This attachement was my dissertation, my final project for my BSc in physics, just would like a proffessional opinion. Best wishes newo

I started working on my project for real at school today and I have no idea if it really is a good project. It seems very arbitrary and messy somehow. I've got two experiments to explore friction. Ff = Frictional force. Fg = Component of force acting down parallel to incline Fn = Reaction...

Ive been given the task of investigating what factors will affect the resonant frequency of a piece of string or wire :cry: . I believe it may have something to do with standing or stationary ways. At the moment I believe I have two ways of doing this, one by using string, vibration generator...

Heard on the news that G.W.Bush was going to let a committee investigate why the help to New Orleans was so ineffective, and what could have been done better. This sounds like a perfectly good idea. However they also claimed that he would lead this committee by himself! :bugeye: Is this true?

Hi I am a year 12 student from Australia and I have to design an experiment. I have no idea what to do. Design is not my forte. I was thinking perhaps I could test whether density effects a material's ability to retain heat by testing the temperature change of a mass of water in a paper cup...

my objective was to achieve free energy and reactionless propulsion to heal the world and colonize other planets to ensure the future of the human race after 5 years research i get to the conclusion that things like the water engine are very real and working but they are kept secret by the...

Hi, I'm doing an investigation in physics - magnetism, to be specific - and basically I'm takin 1 or 2 bar magnets, and a hall probe, and placing the magnets at different distances from the probe, and different angles to see the variation in magnetic field strength. However, I need to extend it...

I was given this and i need help please! Question 1: A person has a trip to of 144km to make. How long will the trip take at a speed of 144 km/h? How long will it take a speed of 2km/h? Construct a table showing the time taken (in hours) to complete the journey at 8 different speeds...

http://www.earthtimes.org/articles/show/2274.html I thought their effects were proven?

National Graphic Channel recently aired a skepticism/debunking program of the bigfoot phenomenon and they presented a piece of evidence concerning the Patterson film that has thrown me completely over into believing it was a hoax. This piece of evidence was the walking gait of Bob...

I'm currently working on designing some type of experiment on which to write an in-depth essay. My idea currently is pretty general, but it basically creating a centrifuge-like model that includes a chamber in which the higher g's would be experienced, with a human within it. The idea is for...

I'm not sure on what I have to do for this practical. I have to develop a theory and choose certain equipment for me to perform the investigation and obtain results... only i don't know where to start. the aim is: Investigate how the amplitude of a pendulum formed by a magnet and thread...

hello, i have a worksheet to do for physics, i am almost done, i need just this problem that i couldn t solve, i just need someone to tell me where to begin or give me some hints :) A police officer is invistigating a traffic accident. two cars collided at an intersection. both drivers said...

http://www.ingentaconnect.com/searching/Expand?pub=infobike://bpsoc/bjp/2003/00000094/00000002/art00004 Purchase required.

Hello. I am doing an investigation on antibiotics. Does anyone know what the exact mechanism of action does methicillin follow? I tried to look for this on google but unfortunately all I can find is MRSA... I think Methicillin has same mode of action as Penicillin G (interfering with cell wall...