What is Positive: Definition and 983 Discussions

Positive liberty is the possession of the capacity to act upon one's free will, as opposed to negative liberty, which is freedom from external restraint on one's actions. A concept of positive liberty may also include freedom from internal constraints.The concepts of structure and agency are central to the concept of positive liberty because in order to be free, a person should be free from inhibitions of the social structure in carrying out their free will. Structurally, classism, sexism, ageism, ableism and racism can inhibit a person's freedom. As positive liberty is primarily concerned with the possession of sociological agency, it is enhanced by the ability of citizens to participate in government and have their voices, interests, and concerns recognized and acted upon.
Isaiah Berlin's essay "Two Concepts of Liberty" (1958) is typically acknowledged as the first to explicitly draw the distinction between positive and negative liberty.

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  1. M

    Identify which of the ff. object will be positive or negative charge

    Identify which of the ff. object will be positive or negative charge 1) Hand and Hair 2) PVC and Tetlon 3) Glass and Poly ester 4) Rubber and rubber 5) Hand and wood
  2. S

    What is positive and negative eigenspaces? Can you recommend me a

    What is positive and negative eigenspaces? Can you recommend me a referance to know them?
  3. Q

    Thermal insulation and positive pressure

    I was having a discussion about thermal insulation (high temperature) and I thought that positive pressure (meaning the heat is being blown onto the insulation) would reduce how effective the insulation was. Say a 1/2" of insulation reduced temperature from 1000 degrees F to 500 degrees F...
  4. R

    Electric field of a loop with one positive halve and one negative halve

    Homework Statement Given a circular wire with radius R. Choose the origin in the center of the circle, the z-axis perpendicular to the circle. One halve of the circle contains a positive line charge \lambda, the other halve a negative line charge of the same magnitude. (a) Sketch the electric...
  5. R

    Positive and Negative 5v from 2 AA Batteries

    I'm designing a portable device running off of 2 AA batteries that requires positive both positive and negative 5v power at the same time. What is the best/cheapest way to achieve this?
  6. B

    Show that the potential at a generic point for x positive is zero

    Homework Statement Show that in this set-up, the potential at a generic point (-x, 0, 0) (for x positive) is zero: two point charges placed at (-a, 0, +a) and (-a, 0, -a) the mirror charges are (a, 0, +a) and (a, 0, -a) The Attempt at a Solution V=(q/(4 pi epsilon0)) ((1/(sqrt((x^2...
  7. N

    What is charge? i know that it is of two types positive and

    what is charge? i know that it is of two types positive and negative, i need the physical interpretation and it would be really helpful if anyone can tell something about the history of discovery of charge,well i know about the discovery of electrons and all that ,what i am interested in...
  8. P

    Give a big-O estimate of the product of the first n odd positive integers

    Homework Statement Give a big-O estimate of the product of the first n odd positive integers. Homework Equations Big-O notation: f(x) is O(g(x)) if there are constants C and k such that |f(x)| ≤ C|g(x)| whenever x > k. The Attempt at a Solution The product of the first n odd integers can be...
  9. F

    Electrostatics: can a positive charge induce negative potential?

    Can a charge, brought into a chargeless world filled with some geometry of conductors and dielectrics, induce a negative potential anywhere in that world? I feel the answer is no. But I cannot think of a good way to prove it, or even attack the problem. More explicitly, imagine a world...
  10. P

    Finding an kinetic energy of an electron moving to a positive plate

    Homework Statement 2 part problem. I've already solved the first part. Two parallel plates are held at potentials of +380.0 V and -150.0 V. The plates are separated by 3.00 cm. a. Find the electric field between the plates. b. An electron is initially placed halfway between the...
  11. L

    Checking weather any positive number is zero or not

    I would like to have a function f such that f(0) = 0 and f(x) = 1 for any x>0. I can compute f in the following way: f(x) = (2*x+1)/2 - (2*x-1)/2 . Here the division is integer division. But if x=0, here we divide (2*0-1)/2 or -1/2, which is a problem. Because we do not have any number -1...
  12. S

    Positive & Negative charge of Tungsten

    Homework Statement How much positive and negative charge are in a 50g Tungsten ring? Homework Equations Standard atomic weight 183.84 The Attempt at a Solution
  13. AJKing

    [Intro Chemisty] Positive and negative charges.

    I'm just learning but I can almost SWEAR that this is right, just reassure me?
  14. L

    Casus irreducibilis with positive roots

    Casus irredicibilis describes a situation where a cubic polynomial with integer coefficients has three distinct real roots, but you can't express those roots using just real numbers and radicals. Instead, if you want to only use radicals, then you must use complex numbers, even though the roots...
  15. C

    Find all the positive divisors.

    Homework Statement Find all the positive divisors of 10^n where n is a positive integer. The Attempt at a Solution can I factor this like 2^n5^n I notice that 10 has 4 divisors and 100 has 8 so it might seem that it has 4n divisors but I am not should how to give a nice...
  16. T

    Column space of positive semidefinite matrix

    how to prove that R(A)=\text{sum of} N(A-\lambda I)? \lambda is nonzero eignevalues of A
  17. L

    Differentiability of eigenvalues of a positive matrix

    I have a matrix A, which contains only positive real elements. A is a differentiable function of t. Are the eigenvalues of A differentiable by t?
  18. H

    Thermodynamics, positive pressure argument

    I'm having a argument with a mechanical engineer concerning positive pressure in a room. I was hoping someone could shed light on this. We both agree (of course) that pumping air into a room that will keep the room under positive pressure (relative to the outside) given that the room isn't...
  19. A

    Why is G-2 of Lande Factor Positive?

    Hello Everyone, In a course on field theory I was asked to calculate the first order correction for Lande g factor. I noticed that this comes out to be positive. ie g-2 > 0 I am wondering if there is a physical reason why this must be positive. Or is it just a matter of chance, that this...
  20. J

    Setting Up a High-Referenced Op-Amp with Positive Gain <1

    I am trying to setup a circuit with an op-amp that is referenced to high rather than ground and has a positive gain less than one. So for instance, my circuite has power rails at ground and 3.3v. I want an input of 3.3v to give an output of 3.3v and i want an input of 0 to give an output of...
  21. O

    How to divide positive and negative charges from each other

    How to divide positive and negative charges from each other without them interacting with other matter or charge patterns. ,please answer I only need this to make my ultimate machine
  22. O

    Understanding Positive invariance

    Hello everyone, I am new to the forum and was wondering if someone can help explain something to me. I would like to understand the meaning of a positivly invariant system. I have checked the definition on wikipedia, http://en.wikipedia.org/wiki/Positive_invariance" and it is...
  23. A

    Say you have a magnet, one end of the magnet has a positive charge and

    Say you have a magnet, one end of the magnet has a positive charge and the other end has a negative charge. What would happen to the magnet if you broke it in half?
  24. A

    Group Theory, unitary representation and positive eigenvalues

    Hi, I'm new in this forum. I have a problem i can't solve and searching on Google i couldn't find anything. It says: If D(g) is a representation of a finite group of order n , show that K = \sum^{i=1}_{n} D^{\dagger} (g_i) D(g_i) has the properties: b) All eigenvalues of K are...
  25. T

    How do I know it's the positive branch

    dy/dx = (4x - y)/(x + 2y) for y(0) = 1 As not seperable us y = vx where v is a funciton of x method. If you follow it through you'll get y as a quadratic. According to the answer scheme, I should take the +ve square root because of y(0) = 1... why? Why can I discard the -ve square root...
  26. D

    Positive recurrent CTMC with a null recurrent embedded DTMC

    A continuous-time markov chain is recurrent if and only if the embedded discrete time markov chain is recurrent. But, (as stated in several sources without proof or example that I can find) if the CTMC is positive recurrent the DTMC may be null recurrent and vice versa. Can someone provide an...
  27. S

    Isothermal Compressibility always positive proof

    I have a question on the quantity -(dV/dP)T,N where V = volume, P = pressure, T = temp, N = number of moles and T, N are held constant. I see in textbooks that this quantity is always positive at equilibrium. It makes intuitive sense, as if it were negative, it would be unphysical. I've been...
  28. C

    Positive Definite Matrix - I think this is correct? Just want reassurance.

    Homework Statement For what b is the following matrix positive definite? (\stackrel{1}{b} \stackrel{b}{4}) (Sorry for the strange way I have that matrix represented) Homework Equations For a positive definite matrix x^{T}Ax for all nonzero x in \Re^n The Attempt at a Solution x^{T}Ax =...
  29. L

    Work. Positive, Negative, or Zero

    1. The Problem: An elevator is hoisted by its cables at a constant speed is the total work zero, negative, or positive? 2. Homework Equations : g= -9.81m/s2 3. The Attempt at a Solution I'm thinking that since the weight of the elevator is in downward direction along with the acceleration of...
  30. K

    Smallest Positive Integer N for which tow(n)=6 is True

    Find the form of all n in N satifying tow(n)=6. (sorry don't know how to write this Tex). What is the smallest positive integer n for which this is true? tow(n)=6 so 6=(1+a1)(1+a2)----(1+ak) where n=p1^a1p2^a2---pk^ak
  31. L

    Magnetic field extraction of positive ions

    A gas composed of nuclear fuel is undergoing fission, producing fast moving positive ions that I wish to remove from the system by use of a magnetic mirror. What field strength is needed to ensure the fragments follow the trajectory I need, and not interact with the surrounding material?
  32. R

    True positive / false positive probability

    Homework Statement in screening for breast cancer, the probability that a mammogram will give a postive result, given that the in dividual has breast cancer is 0.95 (true positive). However the probability of a false positive is 0.1 (a) in a particular population of women, the likelihood...
  33. D

    Proof: Showing C(n,0) < C(n,1) <...<C(n, floor(n/2)) = C(n, ceiling(n/2))

    Show that if n is a positive integer, then C(n,0) < C(n,1) <...<C(n, floor(n/2)) = C Homework Statement Show that if n is a positive integer, then C(n,0) < C(n,1) <...<C(n, floor(n/2)) = C(n, ceiling(n/2)) > ... > C(n, n) Homework Equations none The Attempt at a Solution Seems pretty...
  34. R

    Positive definite matrix and its eigenvalues

    I need to know if there is any relationship between the positive definite matrices and its eigenvalues Also i would appreciate it if some one would also include the relationship between the negative definite matrices and their eigenvalues Also can some also menthow the Gaussian...
  35. G

    Why are positive definite matrices useful?

    I've recently been learning about how to tell if a matrix is positive definite and how to create a positive definite matrix, but I haven't been given a reason why they're useful yet. I'm sure there are plenty of reasons, I just haven't seen them yet. In what ways do the properties of a positive...
  36. R

    Positive definite Negative definate Matrix

    So i need to show if a matrix is positive definite or negative or neither I have a matrix 3x3 A so i compute xTAx I am left with an quadratic equation interms of x_1 x_2 and x_3 The Matrix is of the form A = [ 9 -1 2] |-1 7 -3| [2 -3 3] and solving xTAx i get...
  37. I

    Which integers have exactly 3 distinct positive factors?

    [b]1. Which integers have exactly 3 distinct positive factors? Homework Equations [b]3. I would attempt this if I had any idea of what it meant. Can someone show me how to find one answer then I will find the other 2.
  38. G

    Negative charge between two positive?

    In my Physics class tonight (Physics for Scientists and Engineers 2), we have a quiz about the following topic: "Where to place a negative charge between two positive charges so that the negative charge has an equal force with each of the positive charges." I was hoping that someone could...
  39. D

    Single positive electric charge in a closed universe

    Say, all objects in a closed Universe are neutral, and there is only 1 (unbalanced) positive charge. Lines of an electric field started on a positive charge can end only on the negative charge or they go into infinity. But in a closed universe there are no negative charges nor they can go...
  40. M

    Integral of a rational function over the positive real axis

    Hi everyone, this isn't really a homework question- this integral has come up during project work- but this seems like a sensible place to ask it nontheless. Homework Statement Compute I(t)=\int^{\infty}_{0} dx \frac{x^5}{(t+x^2)(1+(t+x^2)^4)} where t is real and positive. Homework...
  41. E

    Solving a PDE Eigenvalue Problem: Proving All Eigenvalues Are Positive

    I have a PDE test next week and I'm kinda confused. How do you prove that eigenvalues are all positive? I know Rayleigh Quotient shows the eigenvalues are greater than or equal to zero, but can someone explain the next step. Thanks in advance
  42. U

    Negative or positive in rolling?

    When, let's say, a cylinder is rolling on a plane, and there is a rope coiled around the cylinder and the rope moves at an acceleration of A(rope) at the upper part of the cylinder to the right. Ok, so when I try to envision it, the cylinder is rolling in the CW direction. so R(alpha)= -...
  43. E

    Is Q a Positive Definite Matrix in this Mathematical Proof?

    Hi, Suppose we have: q_{ij}=\int_0^1x^{i+j}\,dx can we prove that \mathbf{Q}=[q_{ij}] is positive definite matrix? That is: \mathbf{d}^T\mathbf{Q}\mathbf{d}>0 for all d? Thanks in advance
  44. K

    Positive and negative square roots

    how to determine which is the answer to positive sqrt and negative sqrt in this problem? substituting works but what if the equation is very long and you can't use calcu or computers http://i.imgur.com/SkcQZ.png also is there a way to solve this without squaring both sides?
  45. P

    Positive semidefinite cone

    Hi! If we have a 2x2 matrix [x y;y z] belonging to a positive semidefinite cone. Why is it equivalent to say x>=0, z>=0, and xz>=y^2? Thanks!
  46. F

    Why Is Q Positive in Charge Balancing Equations?

    Homework Statement [PLAIN]http://img256.imageshack.us/img256/9025/93408370.jpg The Attempt at a Solution Shouldn't it be 2Q + x = -Q x = -3Q? My book say it is +Q
  47. M

    Why positive or negtive pole of battery can not attract small objects ?

    why positive or negtive polar of battery can not attract small objects ?
  48. E

    Find the Magnitude of b Given c and a Vector in the Positive y-Axis

    Homework Statement If b is added to c = 3.9i + 3.7j, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of c. What is the magnitude of b? 2. The attempt at a solution I've probably just been staring at these problems for too long... First of...
  49. A

    AC Voltage at Point X on Wire: Positive and Negative Half Cycle

    greetings, consider a wire which is subjected to AC supply.now consider a point X anywhere on wire. now what will be the potential of that point during the positive and negative halfcycle of sinusoidal AC?what will be the direction of current? thanks
  50. M

    Help to prove that an interval will lead to positive functions?

    Homework Statement Let f be continuous at c and f(c)>0. Prove that there is an open interval (a,b) centered at c such that f(x)>0 for all x that are elements of (a,b) Homework Equations we are supposed to use the sign preserving property?? The Attempt at a Solution I tried...
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