Introductory Definition and 366 Threads

Hello all, I am studying for an Introductory Astronomy final and I came across an old exam with a few True and False Questions Supermassive black holes are found in the centres of large galaxies (Supermassive is tricky here, not sure on this) Inflation is the name we give to...

Hi Can anyone recommend me good introductory textbooks on fluid mechanics, both from the physical and engineering perspectives?

Hello >:D Can u suggest me any book which has well explained basic (introductory)ideas - Louis de Broglie's equation ,uncertainty principle ,the wave model by Erwin Schrodinger - in its starting chapter. Thanks in advance (^.^)

Introductory "Limit" hello :D Started to study calculus and was on "limits". I got a little doubt :D When the value of any limit approaches to Infinity.i.e when the numerator have a non zero number but the denominator gets a zero on putting the variable's value , is it called that the limit...

I'm wondering if anybody knows about or has used a good introductory physics textbook that is mathematically rigorous. I'm really interested in physics, but I'm a mathematics student and I CAN'T STAND any of the books I've tried to use so far (eg. Knight's Physics). I've really grown to dislike...

Does anyone know a very good introductory book to topology? I am looking for an introductory book with solved examples, proves and so on. Thanks

any suggestions for introductory textbook?

Hello everyone, I apologize for posting such an introductory mathematica question, but I can't find an answer anywhere. I seem to be having trouble assigning variables and then plotting with the variable name. Perhaps I'm thinking too much in terms of ordinary computer programming or...

What is a good introductory textbook for beginners?

Homework Statement The cross section of a canal can be modeled by a parabola. The canal is 80 m wide at ground level and 20 m deep at its lowest point. The canal is 0.8 km long. Find the volume of water in the canal when it is full to ground level. Homework Equations Will add them...

I know this is the Precalculus Mathematics forum, but this is the kind of intro-level stuff that is taught in general high school mathematics classes before high school calculus, so I thought it would be better off here. Homework Statement An object is moving in a straight line. P is a point...

Homework Statement i have a simple circuit with 115 V and a resistance of 10 ohms. i have to find : a) load current for the circuit b)current through circuit if the resistance becomes open circuited c)voltage across circuit if the resistance becomes open circuited d)current through...

I'm going to be a freshman next year in college and the school I'm going to offers two sequences for possible physics majors. The "highly recommended" sequence is a modern introduction made up of three courses which introduces physics by incorporating relativity from the beginning. The other...

I am going to teach in a two year private college in September. Currently I am in the process of determining what laboratory experiments will the students do so that I can be prepared with the necessary laboratory equipments. My question is, how important is it to have a lab on measurement...

Hey all, I'm looking for a good introductory biology textbook at the high school level. I never took biology in high school, so I need something that is very introductory, but at the same time a good book so that I'll be well prepared for biology courses in college.

Hi. I'm looking for an introductory book on Lie Groups and Lie Algebras and their applications in physics. Preferably the kind of book that emphasizes understanding, applications and examples, rather than proofs. Any suggestions? Edit: Please move this to Science Book Discussion.

Homework Statement Let A be an n x n matrix and let x and y be vectors in R^n. Show that if Ax = Ay and x \neq y, then the matrix A must be singular.Homework Equations So far we have learned the definition of a matrix that has an inverse to be one where: if there exists a matrix B and AB = BA...

So, I started with "Physics for Dummies", but it quickly became confusing. They use speed and velocity interchangeably... calling acceleration the rate at which speed changes, talking about negative speed, telling me that vector a + vector b = vector c. After internet research, I'm pretty sure...

Hi I'm an undergrad studying Materials Science in the UK and hope to move more and more towards physics in my academic career, and was wondering if anyone new of any good books to introduce Special Relativity, I can do basic calculus, and I am OK with classical mechanics, and know a little...

Homework Statement "You have an ideal solenoid with n windings per meter, with a current I = I' sin(wt) going through it. Calculate the induced electric field inside and outside the coil. Side: compare with dipole antenna." Homework Equations Maxwell equations B = n mu I (magnetic...

Does someone know if there's a course offered on RH? I mean reading the literature can be quite intimidating without some beckground before, I read somewhere that the prof from purdue (who allegedlly proved RH) was contemplating offering such a course, but didn't offer such a course.

Question: A 25 mL sample of H2C204 solution required 19.62 mL of 0.341 M NaOH for neutralization. Calculate the molarity of the acid? The reaction was : H2C204 + 2NaOH ---------------------> Na2C2O4 + 2H2O Attempt: [Which line has the mistake in it and what is it?] converted 25mL to L...

Hey, I was wondering if anyone could recommend an introductory book for differential geometry. I am studying general relativity and need some help with this topic. Thanks.

Hello, Could somebody please point me out introductory online book/paper with which I can start understanding gauge theory and how to find out about the progress in the areas Thx

I am looking for an introductory book on sensing using acoustic emissions. Specifically, I am hoping to use acoustic emissions signals to detect tool wear (and classify the wear as mild, severe, etc.). Does anyone have a recommendation? Something with examples using LabView and/or MATLAB...

Can anybody suggest a good introductory book on CFT. I would like to learn String Theory; and this is my basic motivation to learn CFT...

Can anybody suggest a good introductory book on CFT. I would like to learn String Theory; and this is my basic motivation to learn CFT...

Hello all, this is my first of likely many posts here at the newly discovered Physics Forums. I'll do my best to help others out, and hopefully will receive the same in return. I've gotten through about 3/4 of a large problem that I'm working through in my book (no solution manual FTL). Here's...

Hi all, I am enrolled in an introductory signals and systems course at my university. I don't like talking down on my professors but in this case I can't help it. He is one of the worst teachers I have had in my life. I have visited his office hours but he's not really helpful in there...

I really would appreciate your help. I will be starting college this September and physics will be one of my course. I know very little about physics because i didn't do it in high school (i attended an international high school). Do you know of any ebook that will be perfect for me to self...

Homework Statement Given that the uncertainty in the angular velocity is δω = 0.48 rad/s and the uncertainty in x is δx = 0.37 cm, calculate the uncertainty in y (δy) for the following points. The angular velocity of the bowl is 16.3 rad/s and you may ignore the uncertainty in H. I have...

Hello! I'm looking for some introductory materials on the Hamiltonian Treatment of General Relativity; can anybody help with some references?

Are there any good books that focus on teaching the subject then supplying many problems? For trig, algebra, geometry and calculus at high school (gr 12) -> first year university levels. Basically refresher books that will help bridge the gap nicely for going from high school to university.

I hope it's ok to post this here. I have written an introductory book on supersymmetry, which assumes only some basic knowledge in quantum field theory. I made it as detailed and pedagogical as possible. Basically I wrote the book that I wish had been available when I first learned SUSY. The...

Homework Statement Can someone help me solve this Physics question(about momentum)...? A 2.0 Kg body is initially traveling at a velocity of 40 meters/sec East, If a constant force of 10 Newtons due East is applied to the body for 5 seconds , the final speed the body is? Homework...

Hey all, What would you recommend for an introductory pre-calc or calc textbook? I am considering going back to school and instead of taking the Business Calc class I took 10 years ago, (which I passed with a C) attempting the more rigorous engineering series Calculus Courses. It's been a...

I'm going to be taking second semester physics (calculus based) which is basically the E&M portion of the book and waves. I want some good textbooks and book recommendations. Like good books for understanding the materials. Do you think A treatise on E&M by Maxwell is too advanced for me or...

Homework Statement Homework Equations Thevenin stuff, right? The Attempt at a Solution So, I tried to re-write everything and make it a bit easier to understand: I ended up getting Rth completely fine and everything, but I can't seem to get Eth. So from there, I...

Hello all, While searching for a holiday gift for a younger sibling (who is rapidly becoming interested in the sciences), I remembered a demonstration from a high school physics course that sparked my own interest in physics. It involved a unique object - a light bulb with a needle and 4 black...

Hello! I have been working on this problem for around 1.5 hours, and decided I simply need help. Homework Statement "Using branch-current analysis, find the magnitude and direction of the current through each resistor for the network. Homework Equations I tried using kirchhoffs...

Homework Statement 1. Some gliders are launched from the ground by means of a winch, which rapidly reels in a towing cable attached to the glider. What average power must the winch supply in order to accelerate a 188-kg ultra-light glider from rest to 24.0 m/s over a horizontal distance of 51.0...

Homework Statement A small reverberation chamber is constructed with concrete walls. Its internal dimensions are 2 x 2.5 x 3m. Calculate the final steady-state sound pressure level produced by a source of 7.5microwatts acoustic output. Assume the absorption coefficient of the concrete to be...

Introductory Vector Equation Illustrated by a Moving River -- Picture Included Homework Statement A swimmer wants to cross a river, from point A to point B, as shown in the figure. The distance (from A to C) is 100 , the distance (from C to B) is 75 , and the speed of the current in the...

Here is the problem. I've been messing around with it for a while but I'm not sure if what I'm trying to do is the right way to approach this. The form factor F(q) = \int\rho(\vec{r})e^{i\vec{q}.\vec{r}/\hbar}d^{3}\vec{r} is the 3D Fourier Transform of the normalised charge distribution...

Homework Statement u_t = -{{u_{x}}_{x}} u(x,0) = e^{-x^2} Homework Equations The Attempt at a Solution The initial state is a bell curve centred at x=0. The second partial derivative of u at t=0 is {4x^2}{e^{-x^2}}, which is a Gaussian function, which means nothing to me other than its...

The question is in Wade's "Introduction to Analysis" 3rd. edition. Question 1.3.4 Prove that for all real numbers 'a' and natural numbers 'n' there exists a rational number r_n such that |a - r_n| < 1/n. (my) Proof: |a - r_n| < 1/n iff -1/n < a-r_n < 1/n iff -1/n - a < -r_n < 1/n -...

The question asks to find a new expression for a function, by substituting suitable expressions for the elimination of lambda and T. The function is: b(x)= h^4 * c^3 * U(sub-lambda) / 2*(kT)^5 In this case: U(sub-lambda)= U(sub-lambda)(lambda,T) - Planck Blackbody Function x= lambda*k*T /...

I read a post a while back about getting Physics by Resnick, Krane and Halliday 1st or 2nd Edition but I can't find the first and second edition online. I can only find the fourth edition and the fifth edition. Which one should I buy? Which one is better in terms of explanations, proofs...

Is this free introductory physics book any good? http://www.anselm.edu/internet/physics/cbphysics/index.html. If not do you know any other cheaper introductory physics books that are at a high level (under $70 I'm saving for more advanced books)?

Anyone know any good introductory philosophy books? Unfortunately, all the intro to Philosophy courses at my university are closed until next year. I'm an engineering major, which practically has nothing to do with this. However, I find myself highly interested, or at least intrigued, by...