What is Impossible: Definition and 298 Discussions

in attachment you can see the equation

what would happen if you were to be hit with 287 TEV Lead Ion? would you even feel anything or would it kill you? i can't wrap my head around it why i thought it up idk..

I recently reinvigorated my interest in the really sexy fundamental physics stuff that drew me to the field in the first place. Particularly high level theoretical stuff like quantum gravity and dark matter. I'm actually going to be doing some work on a dark matter experiment next semester so...

Question in this link (includes diagram): http://b.imagehost.org/view/0431/photo" I am assuming it require Energy equations The attempt at solution = Fail Please HELP!

I have come to the conclusion that my ideal area of scientific persuit is the area of theoretical physics in specific string theory. Recently i have been researching on which field of theoretical physics i have the most interest in. My area of interests are most simply put the most fundamental...

hi, could you tell me why traveling faster than light is impossible? thank you!

I was thinking of a kind of teleporter common in science fiction: the door that when you enter, you pop out somewhere else. This kind of teleporter violates the first law of thermodynamics! Energy cannot be destroyed or created. If we put two teleporting doors like this...

Chasing The Impossible Lets assume all the elements are in place If a person was to start from any point on the planet and accelerate and maintain his/her acceleration and continue accelerating, having traveled once round the planet, to the point of origin, is it possible the person could...

Homework Statement A 45 g steel marble collides obliquely with an identical stationary marble, and continues at 55 degrees to its original direction. The collision is perfectly elastic. What is the angle between the direction taken by the target ball and the original direction of the...

I think this is a Paradox, but I thought of it and I'm not sure. Can anyone confirm. The paradox is as follows: If it is said Nothing is Impossible, but you cannot be perfect, does that mean Perfection is Impossible?

Homework Statement Radio direction finders are set up at points A and B, 8.68 mi apart on an east-west line. From A it is found that the bearing of a signal from a transmitter is N54.3*E, while from B it is N35.7*W. Find the distance from B, to the nearest hundredth of a mile. A person...

How many can you think of like, its impossible to pull your self up by your shoe strings.

So, as something with rest mass gets closer to the speed of light, it gains more mass, making it require greater force to accelerate it making it gain even more mass and so on. So the reason we use to say nothing can travel at or faster than light is because it gains more mass, and requires more...

Impossible Problem? Can anyone solve this problem... The age of a machine, x, in years, is related to the probability of breakdown, y, by the formula... x = 3 + 1n [y / 1 - y] Determine the probability of breakdown for 1, 3 and 10 years. You need to explain what you did to achieve...

This is one thing that I cannot understand no matter how much I search about it. I read that it has something to do with mass becoming infinite or something like that. How does that happen? Can anyone give me a detailed explanation on why we can't reach it? What will happen if we...

Hello, For a couple of months now, maybe years, I've discovered that my real dream job would be becoming a university professor (I like both the research and the teaching parts). I've heard about how tough it is to land a tenure-track job. I'm not from the US, but I plan on getting a Ph.D...

I've heard that it's apparently impossible to solve a 3-body mechanical problem, but I'd just like to know why. I'm told there are so many integrals and n'th order differential equations that you can't find an analytic solution, only a numerical one, but I want to know is it physically...

Help me solve for X nearly impossible! but still possible I don't know how Homework Statement Any help you can offer would be great for solving this problem. I got very far in the solution and just kept on running into dead ends. Multiple forms of the equaiton below that I was clueless on...

Homework Statement I got two forces acting on an object. I have the magnitude of the forces, 6 N and 2 N. Then I'm asked to find out what force is impossible to produce with these two forces. Homework Equations The Attempt at a Solution I have no idea where to begin with. Maybe...

I know a heat engine can never be 100% efficient. There has to be a cold reservoir that some of the heat is rejected to. Why is that? I know it is because of entropy, but could someone please provide some further explanation. Thanks.

Homework Statement Which of the following statements are IMPOSSIBLE? Choose all that apply. ___A perfectly functioning hydraulic had a pressure of 36 Pa in the fluid near the small piston and a pressure of 37 Pa in the fluid near the big piston. ___A 35 L container displaced 42 L of...

Homework Statement Eveluate by reversing order of integration \int^{2}_{0}\int^{1}_{y/2} ye^{x^3}dxdy Homework Equations The Attempt at a Solution this is what I got... \int^{1}_{0}\int^{2x}_{0} ye^{x^3}dydx I end up with... \int^{1}_{0} 2x^2e^{x^3}dx I don't know...

A question at the end of a chapter in a book I'm reading asked me to prove something which I'm thinking is a mistake because it seems to be impossible to prove. 'Prove that if two homogeneous systems of linear equations in two unknowns have the same solutions, then they are equivalent.'...

Homework Statement Solve the following parametric equations for y = f(x) x(t) = e^{-t} + t y(t) = e^{t} - t The Attempt at a Solution I'm completely stuck on this one. I've noticed x + y = e^{-t} + e^{t} and also y = \frac{1}{x-t} - t but that's about as far as I've gotten.

There is a product for balancing tires which consists of tiny polished ceramic beads that you place in the tire, one or two ounces. The claim is that as the tire accelerates the beads will move to the lightest point in the circumference of the tire, thereby balancing the tire. The claim is that...

1. Explain how a two-holed Torus with it's holes linked can be distorted into an unlinked two holed torus 2. One Linked Genus 2 Torus to be distorted into an Unlinked Two holed Torus 3. It sems impossible to unlink it in #D. So I thought maybe lifting one link into the fourth...

Homework Statement http://img371.imageshack.us/i/asdasde.png/ http://img371.imageshack.us/i/asdasde.png/" Homework Equations Below The Attempt at a Solution I think this question is impossible, i keep getting an answer that says that the particle recoils with a velocity > c_0. Cons. Of...

Homework Statement An 8 kg mass is hanging from two springs that are attached to the ceiling as shown in the figure. The spring constant of spring A is 165 N/m and the spring constant of spring B is 123 N/m. Which spring has a larger displacement? Note: Spring A is attached to the ceiling on...

http://books.google.ca/books?id=Pd8-s6rOt_cC&pg=PA70&lpg=PA70&dq=%22show+that+in+a+hamiltonian+system+it+is+impossible+to+have+asymptotically%22&source=bl&ots=uJplwJKBPB&sig=4HBlny5uGifky2zfdNtWxDi-Uuo&hl=en&ei=yk6tS47hJJTssQOPvJmEDA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CAkQ6AEwAA...

Is it possible to integrate \int \frac{1}{1+e^{-x^2}} dx

Scientists have reportedly been able to transport atoms and molecules as much as 1800 feet. Could the same be done for humans, or would the Heisenberg Uncertainty Principle ultimately make it impossible?

I've heard that there are some types of functions that are impossible to integrate. Can I see an example and why so? Thanks!

Homework Statement Solve this equation: x^2 = 2 \sqrt{x^3 + 1} The Attempt at a Solution Squaring both sides: ( x^2 )^2 = ( 2 \sqrt{x^3 + 1} )^2 x^4 = 4( x^3 + 1 ) x^4 = 4x^3 + 4 x^4 - 4x^3 = 4 Now what? Is there is any technique in whole of mathematics with which...

Homework Statement Given: latent heat of vaporization of water = 2.26 × 106 J/kg . Nine gram of water changes from liquid to vapor at a pressure of one atmosphere. In the process, the volume changes from 0.5 cm3 to 2165 cm3. Find the work done. Answer in units of J. Find the increase in...

I was discussing this once with a friend, he said he thought the idea was a cop-out, and I was wondering what the physics people here think. It just seems to me that no matter how sophisticated our technology and theories get, there are just some things we will never understand regarding this...

Hi there, i'm trying to do molecular dynamics simulations with CO2. However, I'm running into some problems, that I don't fully understand up to know. From a naive point of view, I would describe CO2 as a linear molecule consisting of 2 C-atoms and 1 O-atom. To simulate a flexible model...

Given that 2e^(t²) + e^t - 3e = 0, solve for t. I've been racking my brains to figure out a solution to this one. I know that this can easily be solved by using a graphing calculator, but is there an analytic method to deduce the value of t as well? According to my friend, since this is neither...

Homework Statement (8 marks) A uniform ladder (m = 35kg) leans against a smooth frictionless wall. The foot of the ladder is 3 m from the wall and an 85kg firefighter stands 3m up the ladder as shown. Find the coefficient of friction of the floor. http://i49.tinypic.com/ftdo9g.jpg...

How badly might a student have to perform at a 2 year college to not be accepted into any 4 year college anywhere? And can it be undone so that you can transfer depending on the reason why?

Or is it just that it can't be observed? This is a question that has been on my mind for some time, so i thought it worth asking here. Imagine the following scenario: Two spacecraft travel towards each other. Each travels at 0.6C relative to their point of origin (the points of origin being...

Homework Statement Evaluate the double integral sin(x-y)*e(x-y)^2-0y) 2--- dA where D is a disk of radius 2 whose center is (1; 1) Homework Equations The Attempt at a Solution gee this...

Homework Statement is( X^2 )y + (Y^2)x = 6, then the second derivative at the point (1,3) is ? Homework Equations The Attempt at a Solution I don't see how this is possible, when I plug in 1 and 3 it comes out as 9 = 6 which isn't true. Can someone tell me if this is wrong? or...

I was interpreting a question, and it does not fit with my knowledge and common sense. This is the problem with mystery...:confused: Part of the sequence of a gene along the template strand for transcription was shown to be 5'-AGCTCA-3' Using that partial DNA sequence, determine the...

Suppose an object is moving toward the Earth(with a direction perpendicular to the Earth's surface) at an initial speed v0, starting from a distance r0. The object also experiences gravitational acceleration. Is it possible to obtain an expression of r as a function of t? In other words, what's...

A hypothetical and "impossible" solution to the origin of the Universe. To fully understand the principles by which light operates we have to know that if you look far enough away you can see the universe when it was much younger than it is now due to the amount of time it takes light to reach...

DNA Found to Have "Impossible" Telepathic Properties... You knew I was going to say this. Anyways, very interesting, what do you make of it? Source: Dailygalaxy.com

From the following defining equations, determine the dimensions of the names physical quantities. Use L to represent the dimension length (distance), T to represent time and M to represent mass. a) force, F: F=ma, (where m is mass and a is acceleration) b) pressure, p: p=F/A, (where F is a...

From the following defining equations, determine the dimensions of the names physical quantities. Use L to represent the dimension length (distance), T to represent time and M to represent mass. a) force, F: F=ma, (where m is mass and a is acceleration) b) pressure, p: p=F/A...

Some things are statistically impossible in QM, I believe, but are things there physically impossible?

Hey, has anyone else seen this show prototype this? I'm captivated. It makes me wish, so badly, that I knew more about engineering. It's like mythbusters if they all have PhD's in different disciplines of engineering and the stuff they build (given only 2 weeks no less) is truly amazing...