Reference Definition and 1000 Threads

What are some good reference books to complement "Calculus and Vectors" course? I am looking for a good book to help with Grade 12 Calculus and Vectors (MCV4U (ontario)). I am looking for good explanations and clear diagrams. Thanks.

Here's a question that's bothered me for a while. Suppose you are a person (P) at point A. You travel between point A and B at some fraction of c (speed of light). And so relativity kicks in. Now, that's the standard relativity model and we talk about P with regard to A and B. Now, what...

If we apply the formula for the capacitance of a sphere (C= 4PEr, where P=pi, E= permittivity of free space, and R= radius of the earth), and apply the values we get a value of around 700 microfarad. If we now work out the potential on the surface of the Earth (V=q/c) we get a fairly high value...

As stated in SR and the principle of equivalence, there is no privileged reference frame or reference frame at absolute rest. However, I went across the following idea that seems to be able to tell if a reference frame is moving or at rest. Please help me point out what is wrong in my idea...

Hey! So, as I understand, kinetic energy of a moving object is proportional to its velocity squared. So I'm wondering where these inconsistencies come from, and how they are resolved: So, say two objects of mass M are travelling, with reference to a stationary observer, one in the left...

How does the principle of "Reference Frames" work? What would be an appropriate answer for that statement? I can't think of anything fitting, also I'm not too educated in that subject. Any help is greatly appreciated. :)

When an object is thrown by someone standing on top of a moving train, which variations of "frames of reference" would apply? (i.e. inertial, non-inertial, etc.) How would this principle work? (The object would go the same relative distance as it would if thrown from a person standing on...

Homework Statement We could change to inertial reference frame in a collision to follow a mass. But what would the down side be if we did? Homework Equations Vf1=(M1-M2)/(M1+M2)*Vi1 +2M2/(M1+M2)*Vi2 Vf2=2M1/(M1+M2)*Vi1 +(M1-M2)/(M1+M2)*Vi2 The Attempt at a Solution This question...

Is there self reference in Nature? Foundations of The Quantum Logic

Hello all, Should be a simple question (just started Physics 1 not long ago). Here it is: The thin, fluid filled glass tube is sitting on an accelerating cart. As a result the level of the fluid rises as shown in the picture (attached) by D = 0.6 m. The distance L is given. L = 0.2 m...

Oh the joys of the internet. I read everywhere that Aristotle felt that an object in motion would come to rest without any force acting on it yet no one wants to source anything. I can't find this in his writings myself though I do believe its there somewhere as it seems to be a commonly...

For some reason I've thought about the following case : A uniformly non conductor charged disk is rotating with an angular velocity \vec \omega. If I see it in front of me I'd observe a magnetic field since moving charges produce a current which produce a magnetic field according to Ampere's...

Is it safe to say that any object in an inertial reference frame is at a state of equilibrium? If so.. is it safe to say the opposite: that any object in a state of equilibrium is in an inertial reference frame?

SR "Reference Frames" in QM ? The SR concept of “Reference Frame” cannot be transferred to the micro-world of QM because, due to the HUP, space and time are blurry in that world. Comments? (Thanks in advance).

My friend and I are building a telemetry system for a baja car to measure transmission temperature, fuel level, RPM, etc. that would include a wireless module for realtime monitoring as well as an SD card for backup, all powered from (probably) three 1.2V NiCd AA batteries in series with a...

If i have three or four papers pending publication, review, rejection to another journal etc (a process out my control) and these papers depend on each other for clarification then how do you reference them to each other ? can you reference to a pending publication such as a repository held...

Hi I'm trying to define a Newtonian lagrangian in an rotating reference frame (with no potential) Something to note is that the time derivative of in a rotating reference frame must be corrected for by: \frac{d {\bf B}}{dt} \rightarrow \frac{d {\bf B}}{dt} + {\bf \omega} \times {\bf...

I am confuse of what is inertial frame of reference. Can someone explain that to me? I need a clear explanation starting from the beginning to the end, and if possible, give me some set of example.

Hi All, Kindly suggest me an alternative book for "Classical Mechanics by Goldstein". I am finding it little bit difficult to understand so if i can find any alternate book which is little less complicated than Goldstein it will be helpful for me. I am concentrating on the below mentioned...

What does Special Relativity imply about past, present, and future time? So, here on earth, what can be said about our understanding of past, present, and future actions? Within the same reference frame, is time static? Is it ordered?

Hi guys, I was reading the derivation of ficticious force due to moving frame of reference however i don't understand how they did it.There wasn't detail explanation for slow learners like me so i was wondering does anyone know where i can read up on this or give me some clue where i can start...

Hello Forum, Using a fixed, Cartesian reference frame (i.e., we, observers, are stationary and located at the origin of the system), the trajectory of a particle would be easily described by the parametric (parameter time or arch length) equations [x(t), y(t), z(t)] or [x(s),y(s),z(s)]...

Homework Statement blah blah blah Homework Equations momentum = momentum' mv + mv = (m1+m2)v (Uk)N = friction force The Attempt at a Solution It's hard to find how to start with randomly given values. Thank you so much for your help! :D[SIZE="5"][FONT="Arial Black"][FONT="Arial...

Does anyone think the U2 song "No Line On The Horizon" might be a tribute to Larry Niven's novel Ringworld? The novel describes an engineered, rotating ring-shaped "planet" that occupies an entire orbit around a star. The inside of the ring is populated. Looking afar (e.g. spinward, or...

Homework Statement A boat goes at 7.78 m/s [37 degrees west of south] in a current of 2.41 m/s [5 degrees north of west]. Find the velocity compared to the bottom. Homework Equations I think we use this: Vf2 = Vi2 + 2a x delta d The Attempt at a Solution I drew a diagram but...

Homework Statement http://img198.imageshack.us/img198/3834/relativeboatvelocity.jpg The note says "( Wind relative to boat is irrelevant! )" Why is it irrelevant?

In most of the EE textbooks I have, the topic of filter design seems to essentially be treated like "Here are some active filter topologies, and here are their normalized transfer functions, and here are a lot of tables of pole locations for say the 4 pole 1 dB Chebyshev filter. See you later."...

Hi, I'm using a version of daqacquire to acquire a sample of sound data. This program also uses daqdocfft to perform a Fourier transform, allowing me to view the frequencies that are present in my data sample. My problem is that I don't understand how the function is calculating the...

If we can shoot a photon outward, at velocity c, why is it that the body that shot it outward is not traveling away from the photon with velocity c?

What if i was traveling in a car with an e- with me. W.r.t to a positive charge at rest , it would seem accelerating to me i.e. it would have a magnetic field but acc. to a person on the ground it would just have an electric field. If there were a car moving relative to me , the person would...

A question about special relativity? Car reference vs Earth reference?? Hi I am prepping for a upcoming exam and I am trying to understand some concepts of physics and special relativity...which my exam will be on and i need to understand these problems so that i can know how to do the rest...

In Newtonian physics gravity is a force and in relativity it's curved spacetime if I understand it correctly. So my question is, does the gravitational field of an object look different to different observers? What I mean is, does one reference frame see the strength of the field to be greater...

Hi. Say a particle is moving around in uniform circular motion. The way my book attacks this problem is by placing the coordinate system such that one axis is in the radial direction and the other axis is in the tangential direction. Then we have the following for the radial acceleration...

I am confused by two versions of call by reference in C++. As an example two methods that square an integer (CBR stands for Call By Reference): //Version 1 void squareCBR(int& x) { x = x * x; } //Version 2 void squareCBR2(int* x) { (*x) = (*x) * (*x); } Let's call the functions...

I am reading The Elegant Universe...and I have bumped to possibly the first part of the book that I can not understand. When an electron and a positron pop out of existence, they soon annihilate each other with a "bang"...emitting a photon. If fundamental substance of universe are...

Hi all Why do we actually say that Newton's laws do not hold for non inertial frames. can you folks give me an example of how Newton's laws collapse in an non inertial frame(if they do at all)

hi small question in the drag coefficient formula for boats and ships, is the reference area, the surface area of the submerged part of the ship/boat? demson

Here's a statement that I'm supposed to solve: (\Deltax')2 = (\Deltax)2 - c2(\Deltat)2 And the accompanying text: "Show that (the equation above) is the same for all reference frames in special relativity" I consider myself somewhat decent with your basic special relativity calculations...

Hello everyone. I was wondering if anyone knew any good books of learning the aspects of causality violation in general relativity. I know about Hawking book but that's all. I was wondering if anyone had any references to authors in this area at any level from introductory books that are self...

I was thinking about something earlier today. One of Einstein's famous phrases is "I can not believe God plays dice with the Universe." After pondering on this for a while, something confused me. Say for example we have a group of observers who all observed the Simultaniety of an event...

I am going through the MIT OCW on Linear Algebra [18.06] by Gilbert Strang. The problems which they have on the site are all references to Gilbert Strang's book on Linear Algebra. I cannot buy the book as of now. However, I have got hold of a copy of a book called Linear Algebra by Hoffmann and...

so I am finishing my UG course in physics in about a month or so. however, i had a grant that allowed me to buy books for my course. I have about 130 pounds left. im probably going to go into the field of optics hence born and wolf is an often quoted choice (perahps the optical coherence...

Im trying to understand frames of reference, I am very new to relativity so sorry if I am being silly! Suppose you have a 2 spacecraft one traveling relative to the sun, and the other traveling relative to the first spacecraft in a perpendicualar direction. i know the velocitys of...

I'm writing a lab report about the photoluminescence of two chemicals, (1) indocyanine green and (2) hexamethylindotricarbocyanine tetrafluoroborate. I've done the experiment, and now I need to (well, I've been advised to) find some data in a published paper or reference book to compare my...

collisions and "changing frame of reference?" Homework Statement A 6.0Kg trolley moving at 6.0 m/s right overtakes and collies with a 2kg trolley moving 2m/s right in the same direction on the same track. The collision is cushioned by a perfectly elastic bumper attached to one of the trolleys...

[b]1. Suppose the space time co-ordinates of two events in inertial frame S are as follows: Event 1: x1=x0, t1=x0/c y1=z1=0 Event 2: x2=2x0, t2= x0/2c y2=z2=0 Show that there exists an inertial frame s' in which these events occur at the same time (i.e t1'=t2') and find the value of time...

While explaining about inertial and non-inertial frame of reference, people give this example-- http://www.phys.unsw.edu.au/einsteinlight/jw/module1_Inertial.htm if you don't wish to follow the link, here is a simple explanation---> there are two person and a rotating disk. Person A is in...

I have an essay on radioactive decay, here is the title 'Explore the nature of radioactive decay and Discuss it's applications' Does anyone know any good reference material for this kind of thing? Equivilence of mass and energy Alpha, Beta, Gamma Nuclear power Med Physics Carbon...

Hello everyone, I am a junior Mechanical engineering student with a midterm in my Vibrations I class on Thursday. I've been studying but I'm having some issues really nailing the concepts fundamentally. I feel like I'm stuck in a rut of doing the problem like in the example, but not really...

Homework Statement We have two frames of reference: K (x,y,t) and K' (x',y',t') such that initially x=x'=y=y'=t=t'=0. Now let K' move with a velocity \vec{v} = v [\tfrac{1}{\sqrt{2}},\tfrac{1}{\sqrt{2}}] Write Lorentz transformations in such a case. Homework Equations The Attempt at...