Applications Definition and 662 Threads

Homework Statement A box with a square base and an open top has a volume of 4500cm^3. What are the dimensions of the box that will minimize the amount of material used? (Remember that the amount of material used refers to the surface area of the box). My buddy and I spent a solid hour on...

Hi, This latest announcement on the development of something resembling a BEC using polaritons seems interesting: http://physorg.com/news98645866.html http://physicsweb.org/articles/news/11/5/17/1 So I'd like to know what the implications of this development are. Could this...

find the volume of the solid by rotating the region bounded by the given curves about the specified line, y=x^4, y=1; about y=2 how do i set up the problem so i can figure out the area, i don't need the answer, and i already graphed it, and i already rotated the graph,

Homework Statement A projectile is launched upward. Its height above the ground after t seconds is -16t^2 + 320t. After how many seconds in the air will it return to the ground? Solve algebraically. Homework Equations ax^2+bx+c=0 ? -b (+/-) (Square root of b^2 -4ac)/2a ? The...

What should an internship application consist of? Should it contain a brief introduction even though the resume has been attached? Should the long term goals be mentioned at all?

As a Grade 12 student that is often required to find the roots of quadratics for math, physics, and chemistry problems, I wondered whether there would be any methods for solving these problems excepting the quadratic formula. I was pondering the implications of calculus in algebra and, although...

Homework Statement Find any critical numbers of the function Homework Equations g(t) = sqrt (4-t) , t < 3 The Attempt at a Solution I'm not really sure how to find a critical number when square roots are involved. I do know typically when finding the critical number you find the...

Was wondering if anyone is familiar with lorenzt force? Here is the problems whatever help you can give that would be great thank you in advance. Does anyone know a good site to practice these types of problems Homework Statement An electron is moving initially in the +x direction in a...

Hey, has anyone heard from REU programs? I applied to the following mathematics REU: ASU - ? Calstate Chico - ? Calstate San Bernardino - ? Cornell - (no way I am getting in) ? Grand Valley State - ? Penn State University Park - ? University of Wisconsin - ? Pitzer - ? Williams...

I am sending in applications for REU's and I am wondering if I should send them in large letter size envelopes, or just fold the application materials and put it in a smaller regular(?) size envelope? Does it even matter? Thanks!edit... Also, if I use a larger size do I need more stamps...

answer me this is urgent.. can you tell me the general properties of superconductivity and applications of superconductivity? if any websites are there,please tell me the sites i will search,i have gone through google but i couldn't get the answer.if anybody pls send it as a link...please it...

I am stuck on the following questions lately. I hope someone can explain/help me out, any little help is greatly appreciated! :smile: 1) Let f(x) = x^3 - 3x + b. 1a) Show that f(x)=0 for at most one number x in [-1,1]. 1b) Determine the values of b such that f(x)=0 for some x in [-1,1]...

I am currently applying to several physics REUs for this summer, in the hopes of being accepted into at least one of them! Since this is my first attempt at this endeavor I am a bit concerned as most applications include sections for "Honors and Awards" and etc. Currently I am a Junior with no...

I have heard about the use of SR in GPS systems. A friend of mine asked whyh it is necessary for GPS systems to be able to measure time so accurately? What has time got to do with finding one's location? Also, I've heard about the application of SR by physicists doing high energy...

I'm currently an undergrad at Georgia Tech and I would really really like to go to MIT or another top school. The way it currently it is I have to take 12 hours next semester and 13 hours the semester after that to graduate. Someone suggested taking graduate level classes. My courseload is...

I'm finishing up my BSc this year and am applying to PhD programs in math for next fall. All the applications want me to write some sort of personal statement. For example, Princeton gives the following instructions: Please write a statement of your academic and future career plans as they...

I'm a physics undergrad who's had some experience with Java and Fortran and a little bit with C++. I've only taken one computer science course which taught me the basics of Java, so I've been somewhat shielded from other programmers and from programming as it's done in the "real world". I have...

Hi, I am stuck on this problem, any feedback would be greatly appreciated. Thank you... The leaning Tower of Pisa is 55 m high and 7.0 m in diameter. The top of the tower is displaced 4.5 m from the vertical. Treating the tower as a uniform, circular cylinder, (a) what additional...

I have to present shortly five applications of vector dot product in physics, for example: W=F*s. I am not quite clear about vectors, so could someone advise me.

The voltage, V, in volts, in an electrical outlet is given as a function of time, t, in seconds, by the function V = 156\cos(120 \pi t). (a) Give an expression for the rate of change of voltage with respect to time. (b) Is the rate of change ever zero? Explain. (c) What is the maximum value of...

I was wondering if some of you could describe a couple of the applications of a neutron generator and or suggest some further reading on the types of such?

Hi, I am having trouble visualizing this problem, if anyone can help me see it, I know how to do the integral part. A church steeple is 30 feet tall with square cross sections. The square at the base has side 3 feet, the square at the top has side 6 inches, and the sides varies linearly in...

I have to write about the applications/uses of specific heat capacity. I know what SHC is- the amount of heat required to raise the temperature of 1kg of substance by 1°C/ 1K. But I have no idea how that can be applied anywhere or anything.. I've searched the entire internet for the...

How would you quickly derive the binomial series? Would you have to use Taylor's Theorem/ Taylor Series? And does the Binomial Theorem follow from the binomial series? Are there any applications at all of the binomial series/ Binomial Theorem to special relativity? I know the binomial series is...

Hello all, I have a question concerning the Tangent and Secant Functions (the graphs). I cannot think of a way that either of these can be used in the real world. I need to find applications for these. For example, the sine function can be used to represent waves or periodic motion... but...

# A mass spectrograph determines: a)spectrum of light b)charge of the ion c)specific charge of positive rays d)specific charge of cathode rays I know that a mass spectrograph has been used to determine the specific charge of positive ions and we may get 1, 2, 3… Parabola’s depending on the...

Ok I have taken Geometry, Algebra one and two and have 2 more days of pre cal left and I have been worken with logs and stuff like solveing, simplyfing and factoring them but I never found out what they are for... I know how to solve the problems but what do they apply to in real life?

Hello all, I am a newbie here, and I have a couple of things to ask with relevance to what I'm doing here... but first I'll want to introduce myself, I'm an Electronics and Communications Engineering freshman (turning sophomore this school year 2006-2007) studying in the Philippines. I'm...

Pade Approximation states that a power series can be written as a rational function. Which is a series divided by another series. (An easy example of this will be the geometric series with mod'r' < 1) I've read books about the abstract bit of this. But I am completely stuck when it goes onto...

for our project in calculus, I am doing a presentation on the basics of complex analysis. Somewhere along there I need to tackle the question: what are the applications of complex analysis? Are there any application problems that I can give that involve basic derivatives/integrals of complex...

Hey, Guys! I wonder what applications of Ramsey's famous theorem there exist apart from such cases as: 1) constructions of functions in the domain of natural numbers to check some properties of sequences of real numbers. 2) propositions about points in convex postition (Erdos-Szekeres...

"I just formulated Bernoulli's principle! What are some applications?" Do physicists ask/answer these kind of questions? Moreover, are physicists paid to answer these kind of questions or am I thinking too much like an engineer? I'm thinking along the lines on John Bardeen et al. with their...

Hi I have to prepare a presentation on radio frequency imaging, applications and technical aspects etc. Unfortunately the uni library has closed and my google searches appear to be coming up rather thin (more RF coils in imagers than RF imaging). Does anyone know where I could find some...

Would an intro course to modern algebra be useful in any way to an electrical engineer? Here is a description of the class: Introduction to set theory and logic; elementary properties of rings, integral domains, fields and groups. By the way, I would like to eventually get into integrated...

Newbie here! Can anybody help me about the applications based on basic circuit elements like Resistors, Inductors & Capacitors! and where can I get 2 see the pictures of these elements:frown: sorry once again ... I don't know anything .. I AM A NEWBIE Want to learn :smile:

Hi, I just came to this problem when I was studying the photoelectric effect, what is the exact definition for "light intensity" ? Is it just n (the number of photons) or is it E/(A.t) where E=nhf ? The latter can be the same as the former in comparison when we suppose the frequency is the...

I need to know the applications of nuclear fusion, Is there anybody who could help?

First could someone actually explain the following question to me! Consider a hydrogen atom to be a positive point charge e at the center of a uniformly charged sphere of radius R and with total charge -e. Using Gauss' Law, find an expression for the electric field as a function of the...

Can anyone explain what to do for these 2 ? 1.) If a=3i-4j, and b=4i-3j, what is the magnitude of the vector a-b? 2.) A boy throws a ball at an initial velocity of 26m/s at an angle of 20 degrees above the horizontal. How high above the projection point is the ball after 1.4 seconds ?

Can anyone help me to solve for the distance here ?? I'm lost ... A baseball player slides with an initial speed of 7.9 m/s. If the coefficient of kinetic friction between the player and the ground is 0.41, how far does thet player have to slide before comming to rest ?

Hey can somebody list the practical applications of Modern Algebra? Anything that's grounded in reality?

Are there any applications that always involve the use of noninvertible or singular matrices?? I know there are plenty for invertible ones. Thanks.

I'm asked to find the volume generated by rotating the region bounded by the given curves about the y-axis (using the method of cylindrical shells). I'm given the functions y= 4(x-2)^2 and y = x^2 - 4x +7. I'm not sure how to word this properly...they don't give me the domain of the function...

Can anyone explain to me the graph theory and its applictations.

It's university application time! Here is my dilemma: On one hand, I love chemistry and biology, and am good at them, but what exactly can I do with a degree in biochem besides research and becoming a doctor? On the other hand, I'm good at math, and I know I'll find a job very easily if I take...

This is probably really easy, but I can't figure out what to do. A man of mass 80kg (W= 176 lb) jumps down to a patio from a window ledge .50m (1.6ft) from ground. He doesn't bend his knees on landing so his motion is arrested in a distance 2.0cm (.79in) What is the acceleration of the man...

I'm on the 3rd unit of my physics unit and we're applying Newton's 3 Laws of motion. There's this problem: "A fisherman yanks a fish out of the water with an acceleration of 4.5 m/s^2 using very light fishing line that has a "test" value of 100 N. The fisherman unfortunately loses the...

I along with a buddy of mine in the same course have been trying to figure out the following question. We spent at least an hour and a half to two hours and nothing makes sense. Any help would be greatly appreciated. Here's the question as it's written: One way to measure the acceleration...

I am currently working on the crct. in the attachment. I have been asked to find the "node voltage method" (i.e.-KCL) to determine Vo. I want to check my equation and was hoping someone can help. Also, I am trying to prepare for an exam and would like maybe an easier way numerically to approach...

What are some of the more practical applications, if there are any, of computational physics?