Zero Definition and 1000 Threads

Gonzalo Raúl Barrios Castro (born April 17, 1995), known by his gamertag ZeRo, is a Chilean former professional Super Smash Bros. player and streamer. He was considered the best Super Smash Bros. for Wii U player in the world throughout his career, with a record-breaking 56 consecutive tournament wins in the game from November 2014 to October 2015, including high-profile tournaments such as EVO 2015 and The Big House 5. Prior to the release of Super Smash Bros. for Wii U, he was a top ranked Super Smash Bros. Brawl and Project M player. His best known characters are Diddy Kong in Super Smash Bros. for Wii U, Pit in Project M, Meta Knight in Brawl, and Fox in Melee. He is the only player to have earned more than US$100,000 playing Super Smash Bros. for Wii U competitively.
Barrios retired from professional competition in July 2020 following allegations of sexting two minors in 2014, which also led to Barrios' sponsors cutting ties with him. Barrios later publicly admitted to the allegations.

View More On Wikipedia.org
Recent contents Top users
  1. T

    How Does Material Choice Impact Physics Experiments on Absolute Zero?

    I just performed a lab in my physics class, and there are a few conceptual questions that I am having trouble with. The lab was simple. We took a constant volume sphere made of Stainless steel and filled with air. We changed the temperature of the water it was into record the corresponding...
  2. P

    Finding the Zero Point of Electric Potential Between Two Point Charges

    Homework Statement Two point charges are placed on the x axis. The charge + 5 q is at x =1.50m , and the charge −q is at x= -1.50m . There is a point on the x-axis between the two charges where the electric potential is zero. Where is this point? The electric potential also vanishes...
  3. J

    Superconductivity and zero resistance

    Hi, I am fairly new to superconductivity (introductory college level). I have covered and grasped the basics but was wondering if someone could shed some light on what specifically causes materials to have zero resistance when they become superconducting. I know that cooper pairs form when the...
  4. M

    MHB Show that the limit is equal to zero

    It is given that $a_{n}$ is a positive and decreasing sequence. Show that if $\sum_{n=1}^{\infty}a_{n}$ converges, $\lim_{n \to \infty}na_{n}=0$. That's what I tried.Could you tell me if it is right?? $\sum_{n=1}^{\infty}a_{n}$ converges,so it satisfies the Cauchy criterion,so : $\forall m,n$...
  5. L

    Why is the electric field inside of a conducting sphere zero?

    Homework Statement Consider a solid conducting sphere with a radius a and charge Q1 on it. There is a conducting spherical shell concentric to the sphere. The shell has an inner radius b > a, outer radius c and a net charge Q2 on the shell. Denote the charge on the inner surface of the shell...
  6. P

    How do we know (BΨ) is not equal to zero?

    Suppose that operators A and B have complete sets of eigenfunctions, [A, B] = 0, and Ψ is an eigenfunction of A with the eigenvalue a, namely AΨ=aΨ. Then we have A(BΨ) = BAΨ = a (BΨ). They say (BΨ) is also the eigenfunction of A. Why? How do we know (BΨ) is not equal to zero?
  7. S

    Why does the operator S_p - S_n in deuteron result in a zero expectation value?

    Hi, apologies if this is simple. I'm a bit confused with a piece of text from Introductory Nuclear Physics by Wong. It's talking about finding the expectation value of the magnetic moment of the deuteron. In the deuteron it is known the total spin quantum number is S = 1. In deriving the total...
  8. G

    Thermodynamics problem, Enthelpy zero for an ideal gas

    Homework Statement Show that \left(\frac{\partial H}{\partial T}\right)_{T} = 0 for an ideal gas Homework Equations The question required me to first solve \left(\frac{\partial U}{\partial T}\right)_{P}...
  9. C

    Where Does the Electric Field Cancel Between Two Unequal Charges?

    Two isolated point charges -7μC and +2μC are at a fixed distance apart. At which point is is it possible for the electric field strength to be zero? I don't know where to start with only 2 numbers and no distances. I know that E= kQ/r^2
  10. T

    Heat insulating material near abs zero

    hi all, I was wondering if there is any industrial/common type of material (at around temperature of 3K) that can function as bolts/screws or thin sticks. This is to be used in a cryostat and ideally prevent any heat conduction from the material it is attached to during the process...
  11. PsychonautQQ

    How do i show this integral equals zero? (I'm quite positive it does)

    Homework Statement So on my first day of intro to quantum physics my teacher assigned a lot of calculus problems as homework. One of them problems was a quite lengthy proof that one integral is the equivalent of another, and I am so close to getting the correct answer! All I need to do to...
  12. T

    Effect of a net force of zero mechanics question

    Homework Statement True or false If an object originally at rest is subjected to more than one non zero force but the forces sum to zero then the particle will not move. Homework Equations None The Attempt at a Solution I say false I think it something to do with angular...
  13. B

    Work done on accelerating car is zero?

    The static friction force which provides the acceleration of a car does not move through a distance (the point of application is stationary with respect to the road at any instant). Isn't it that only external forces may change the translational kinetic energy of an object? If so, and if the...
  14. cactusblanket

    Two Electric Dipoles-Net Charge of Zero

    Hi there, Can someone help out with this problem? Thank you.:redface: Homework Statement Consider two electric dipoles in empty space. The net charge of each dipole is zero, so does an electric force exist between them? Homework Equations F=kq1q2/r2 The Attempt at a Solution...
  15. H

    Why Does Gauss' Law Imply Integral of Electric Field is Zero?

    Hi everyone. This isn't a homework problem. Rather, I'm trying to understand how the δ term arises from the field of a dipole. Homework Statement Greiner supplies the following one-line derivation, which is easy to follow I guess, but doesn't make logical sense to me. Specifically, I don't...
  16. N

    The fundamental forces and elementary particles at absolute zero

    We all know that there four fundamental forces in nature, viz. The gravitational force The electromagnetic force The strong nuclear force The weak nuclear force Now also we know that temperature of any system is the average kinetic energy possessed by the particles of the system Now...
  17. Ascendant78

    Determing location where electric field is zero?

    Homework Statement Homework Equations See #1 The Attempt at a Solution Based on the information in the question, I did what I could, but in the back of the book they have an answer of -9.9a and I have no idea how? For the +3q on the right, I set the denominator to (2a+r)^2...
  18. Spinnor

    Proton e goes to zero, smaller g, , vacuum color polarization.

    Suppose we consider a proton where we set the electric charge of the three quarks towards zero. At this point I assume we still would have the three quarks bound together? Now reduce the strength of the strong force by say ten times. I was told in posts that the radius of the proton depends on...
  19. R

    Zero Momentum in Elastic Collisions

    Is it possible to have a zero vector? The question arises in the context of conservation of momentum. In center of mass reference frame, the momentum of two masses involved in an elastic collision is zero before (as well as after) collision. It is because the two masses have equal and oppposite...
  20. Entanglement

    Can Zero Electric Potential Prove No Current Flow in a Connected Wire?

    how can I prove that no current would flow in a wire connected between two wires of equal potential. For an example a resistor of 2 ohms carrying a current of 3 Amp and a resistor of 3 ohms carrying a current of 2 Amp, and a wire "A" is connected between them. Obviously, the potential difference...
  21. N

    What is the Lagrangian of interaction of photon and spin zero scalar?

    What is the Lagrangian of interaction of photon and spin zero charge scalar?The vertex of photon and spin 1/2 charge fermion is proportional with e multiplied vertor gamma matrix,but I do not know what is the vertex of photon and charge scalar.I hear that a vertex is proportional with polynomial...
  22. D

    Prove that y(x) has finitely many positive zero

    Homework Statement Given $$y''+e^{-x}y=0. \qquad (*)$$ Let ##y(x)## be any nontrivial solution of ##(*)##, show that y has finitely many positive zeros. Hint: Consider ##z''+\frac{C}{x^4}z=0## where ##C>0## is sufficiently large, which has a solution ##z(x)=x\sin \frac{\sqrt C}{x}##. Homework...
  23. N

    Time Dilation Effects of Hypothetical Zero Gravity Pocket

    If you could create a small space on Earth in which a person could fit that was totally unaffected by gravity, or that was sheltered from the gravitational affects of external sources of gravity, what sort of affect on time dilation would be observed? Both for the person in the pocket, and for...
  24. rakeru

    Finding the point where the net electric field is zero

    Homework Statement The question wasn't really written down. It was a question asked after an explanation, and it really wasn't straightforward. I'm going to try to make it into a intelligible thing. If there is a +3 charge and a -1 charge at a distance from one another, where to the right...
  25. S

    Doesn't this integral equal zero?

    \displaystyle\int_0^\pi\dfrac{x dx}{a^2sin^2(x)+b^2cos^2(x)} I have to prove this to be equal to \dfrac{\pi^2}{2ab} but with my attempt at it this problem boils down to: \dfrac{\pi}{2ab}\bigg[\arctan\Big(\dfrac{atan(x)}{b}\Big)\bigg]_0^\pi which equals zero.
  26. jim mcnamara

    How Do You Make Salad in Zero Gravity?

    http://www.gocomics.com/berger-and-wyse#.UqXa09JDswA This puts a new spin on preparing some lunch. Although I wonder where the greens came from.
  27. Nemo's

    How do i get rid of the zero factor ?

    Homework Statement lim (sinθ-1/2)/(θ-∏/6) θ→∏/6 Homework Equations The Attempt at a Solution Direct substitution with ∏/6 gives 0/0 How do i get rid of the zero factor ?
  28. caffeinemachine

    MHB If Derivative is Not Zero Anywhere Then Function is Injective.

    Hello MHB. I am sorry that I haven't been able to take part in discussions lately because I have been really busy. I am having trouble with a question. In a past year paper of an exam I am preparing for it read: Let $f: (a,b)\to \mathbb R$ be a differentiable function with $f'(x)\neq 0$ for...
  29. N

    Complex contour integral zero while containing a pole?

    [SOLVED] Complex contour integral zero while containing a pole? Homework Statement ##f(z) = \frac{1}{z^2 +2z +5} = \frac{1}{(z-z_1)(z-z_2)}##, where ##z_1= -1+2i## and ##z_2 = -1-2i##. Now, let z be parametrized as ##z(\theta)=Re^{i \theta}##, where ##\theta## can have values in the...
  30. L

    Symmetry of an Integral: Is it Zero?

    If function is ##f(-x,-y)=f(x,y)##, is then ##\int^{a}_{-a}\int^{a}_{-a}f(x,y)dxdy=0##? Thanks for answer.
  31. Petrus

    MHB Why is zero both singular and plural?

    Hello MHB, I Was woundering WHY is zero in plural? Exemple "I got zero cats". What do you think? Regards, |\pi\rangle
  32. Y

    Is wave and heat equation with zero boundary Poisson Equation?

    I have two questions: (1)As the tittle, if u(a,\theta,t)=0, is \frac{\partial{u}}{\partial {t}}=\frac{\partial^2{u}}{\partial {r}^2}+\frac{1}{r}\frac{\partial{u}}{\partial {r}}+\frac{1}{r^2}\frac{\partial^2{u}}{\partial {\theta}^2} and \frac{\partial^2{u}}{\partial...
  33. N

    How to prove zero correlation between residuals and predictors?

    Hi, I'm trying to figure out something I'm pretty sure is true, but don't know how to prove it. I couldn't find the answer with a google search, but hopefully someone here knows the answer! So I have a linear least squares multiple regression model: Y=a+bX1+cX2+e where a is the intercept, X1...
  34. S

    First pressure derivative of bulk modulus at zero pressure

    what is the physical meaning of first pressure derivative of bulk modulus at zero pressure. if it is ∂k/∂p, i say how it change with pressure, if it is at zero pressure?
  35. G

    Can the constant term of a power series be zero?

    In the context of my work (linear differential equations), it can not be zero. But why?
  36. Q

    Simple question about zero gravity and weightlessness

    Ok, I have to do my case study on zero gravity but I am just not understanding it. It says weightlessness is similar to when you are in a free fall, for example in an elevator because you are accelerating at gravity's force? I don't get what EXACTLY makes us weightless just because we are free...
  37. Malverin

    Liquid pressure gradient in zero gravity

    Is there any data about such measurements? I think, there has to be a pressure gradient in a floating liquid sphere due to surface tension.
  38. A

    Why is the Factorial of Zero Defined as One?

    can u give me the method to find the factorial of zero ?
  39. F

    Proving Convergence of the Taylor Series for 1/(1-x) as n Approaches Infinity

    Homework Statement How do I prove that Rn(x) is zero as n approaches infinity for the nth taylor polynomial of 1/(1-x) when x is between -1<x<1 Homework Equations 1/(1-x) Rn(x)=M*(x-a)^(n+1)/(n+1)! nth derivative of 1/(1-x) is n!/(1-x)^n+1 The Attempt at a Solution the nth...
  40. K

    Zero Errors in Vernier Calipers and Micrometer Screw Gauge

    Hi, I have a question to ask. On my notes that my teacher gave me, he said that there are some errors in the notes. He had not responded to me which are the errors yet but he said about zero errors in vernier calipers and micrometer screw gauge. The question is: On my notes, it says that...
  41. Seydlitz

    Limit of a sequence does not goes to zero

    Homework Statement Could you guys please verify this proof of mine? I want to show that a limit with particular property does not go to 0. It is part of the proof that when a sequence have an ever increasing term then the limit of the sequence is not 0. The Attempt at a Solution The...
  42. J

    Does Zero Work Imply Unchanged Speed and Velocity?

    Homework Statement An object is moving along some path. the total work done on the object during this process is zero. Homework Equations no equation The Attempt at a Solution A the speed of an object has decreased. B the speed of the object may have changed. C the object must be...
  43. R

    V=[k(q)/r] + [k(-q)/r] Finding the points where v is equal to zero.

    Hello! First of all, thank you for your time in reading my post. Secondly, I am not looking for people to freely give me the answers. With all that said... Homework Statement I have a test point randomly selected on a graph, but what I am trying to figure out is where on this graph...
  44. ajayguhan

    Why Does Sum of Matrix Elements x Cofactor in Different Rows Equal Zero?

    In a matrix the sum of element of a matrix in a row times it's co factor of that elemt gives the determinant value, but why does the sum of element of a matrix times cofactor of different row is always zero?
  45. P

    Show that inner product is zero.

    Let A be a Hermitian operator with n eigenkets: A|u_i\rangle = a_i |u_i\rangle for i=1,2,...,n. Suppose B is an operator that commutes with A. How could I show that \langle u_i | B | u_j \rangle = 0 \qquad (a_i \neq a_j)? I have tried the following but not sure how to proceed: AB -...
  46. M

    How vector area of a closed surface is zero?

    how vector area of a closed surface is zero?
  47. FOIWATER

    How the electric field inside a charged ball is zero

    I am having issues with multiple gauss' law problems. Assume we have a charged spherical surface. Inside the surface, E=0V/m. But why? I understand that at the center it should be zero due to symmetry, but why would it be zero at some point say, inside the surface but not at the center...
  48. A

    Why is torque on a frictionless axle zero?

    I'm currently reading John Taylor's Classical Mechanics. Near the end of Chapter 3, he states "Because the table is mounted on a frictionless axle, there is no torque in the z direction. Therefore, the z component of the external torque on the system is zero and the [system's angular momentum in...
  49. S

    Zero electric field within wire of zero resistance.

    If a resistor of a resistance = 6 ohms is connected to 2 wires of zero resistance (0 ohms) in a DC circuit with a battery of voltage = 12V, the current throughout is 2A. The voltage drop across a 0 ohm wire is V = R*I. Because R = 0, the voltage drop across the wire is 0V. The only way for this...
  50. K

    Is it possible for a wormhole to have zero spacetime curvature?

    I have always read that a wormhole will quickly collapse in on itself due to its own gravity, forming a black hole, unless it is held open by some exotic matter that has a negative energy density. But couldn't there exist a wormhole with zero spacetime curvature? It would therefore have no...
Back
Top