Static Definition and 1000 Threads

Static is a fictional superhero appearing in American comic books published by DC Comics. The character was created by Milestone Comics founders Dwayne McDuffie, Denys Cowan, Michael Davis, and Derek T. Dingle. Static's first appearance was made in Static #1 (June 1993) in the Modern Age of Comic Books, written by McDuffie and Robert L. Washington III, and illustrated by John Paul Leon. Virgil Ovid Hawkins is a member of a fictional subspecies of humans with superhuman abilities known as metahumans. Not born with his powers, Hawkins' abilities develop after an incident exposes him to a radioactive chemical. This event renders him capable of electromagnetic control and generation.
The character drew much inspiration and was in fact designed to represent a modern-era Spider-Man archetype. After the closing of Milestone Comics, Static was incorporated into the DC Universe and became a member of the Teen Titans. A common misconception is that Hawkins is the son of fellow DC Comics superhero Black Lightning, who debuted much earlier and possesses electrical abilities. Black Lightning addresses the coincidence once in a Justice League narrative.Static has made numerous appearances in other forms of media. The character has been featured in various animated series, including Static Shock, a version of the storyline made slightly more suitable for a younger audience, as well as animated films and video games.

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  1. N

    Static Electricity and Number of Electrons

    Homework Statement When you rub a gold sphere with rabbit's fur, the gold takes on a negative charge (and the rabbit fur positive). Suppose the gold sphere has a mass of 190.0 g and it obtains a net charge of 0.540 μC. Calculate the ratio of the number of electrons added to the gold sphere to...
  2. 5

    Fluid mechanics-Total energy line of static system

    I have two reservoirs, connected by two pipes. The first reservoir is higher in elevation than the second. If the system is full of static water, what would the total energy line look like? Since the velocity of the flow through the system is 0, would the total energy line just be a straight...
  3. E

    Generation of Static Electricity

    I was wondering if and/or how one would could calculate the the generation of static electricity between 2 materials. For example material A is immersed in substance B and moves within it at a constant velocity. Knowing the velocity and volume / surface area of material A and the electron...
  4. B

    How to safely create static electricity from AC current

    Is there a simple way to "make" static electricity from an AC outlet? Looking for a way to make my hair stand (what is left of it) on its end for an experiment. Thanks for your comments in advance.
  5. B

    How can you use electricity to create static charge and bend water?

    Hello all, I watched a youtube video where you can rub a plastic tube on your hair, and the static electricity generated will pull a stream of water falling from a faucet. My question is, how would this be possible to do electrically? Meaning, using electricity or a battery powered...
  6. A

    Static and rolling friction difference

    Is rolling friction considered static friction? After all, the two surfaces are not moving at the point of contact. My textbook separates static and kinetic friction.
  7. A

    Static and kinetic friction in a car halting

    In my textbook, there is a problem that made me think a bit more (this is not what the textbook was asking). In the problem, there is a 1500 kg car traveling at 30 m/s on a 10 degree sloped hill (the car is driving uphill). The driver slams on the brakes and skids to a halt. We have to...
  8. M

    Static electricity and circuit breakers

    Hi I have seen electric technicians while racking out high tension circuit breakers, use a wire that has one end grounded and they use the other end to touch the bus bars on the breaker in case of a static charger, they carry out this procedure before they do any work on the CB in case they...
  9. I

    Static friction of masses connected by a rod

    This isn't homework...I'm reviewing physics after many years of neglect. Given 2 masses, m_1, m_2, connected by a rigid, massless rod, stationary with respect to a ramp which makes an angle of \theta with the horizontal, with coefficients of static friction between the masses and the ramp =...
  10. B

    Factors Impacting Pressure in a Static Fluid

    Homework Statement what factors affect the size of the pressure at a point in a static fluid? Homework Equations The Attempt at a Solution
  11. J

    Two gear system in static equilibrium

    Homework Statement Two solid steel shafts are coupled together using meshed gears. Determine the angle of twist of end A. Shaft DC is fixed at D. Homework Equations angle of twist = torque * shaft length / ( polar moment of inertia * shear modulus) balance of forces where the two gears...
  12. D

    What Forces Act on a Static Cylinder on an Inclined Plane?

    Hi everyone, If I have a static cylinder on an inclined rough plane at an angle alpha supported by a chord under tension, which leaves the surface of the cylinder at a tangent upwards and parallel to the plane. Does the weight component trying to pull it downwards equal the sum of the friction...
  13. U

    Is the bar in static equilibrium?

    Homework Statement uk of fraction between bar and both surfaces is 0.2. Bar weighs 5 kg. i) Is the bar in static equilibrium? If not, which end will fall down and which end will go up? Homework Equations F-uk*FnThe Attempt at a Solution Not sure how to even begin analyzing this. I cannot...
  14. K

    Torque Problem Static equilibrium

    Homework Statement Homework Equations How to do this question ?? The Attempt at a Solution I know sum of torque and force = 0 at fapplied i got torque = 25sin(45) * 3.8m = 67.18N .. But don't know what to do next !
  15. PhysicsKid0123

    Static Equilibrium: Why Ethelred Gets the Short End of the Pole

    It is a thousand yeas ago. You, along with your friend king Ethelred the Unready, have been hunting wild boar. You've had good luck; you shot a 150 lb boar. Now the hard part; you have to carry it back to the castle several furlongs away. Fortunately you have some rope and an 8 cubit pole. You...
  16. A

    How Does Static Friction Maintain Equilibrium in a System of Balls?

    Homework Statement Two small balls, each of weight Wo, are supporting a big ball of weight W1, as shown in Figure Q2. The line connecting the center of the upper ball and that of a lower ball forms an angle of 45° with respect to the horizontal, as shown in Figure Q2. A block of weight Wo is...
  17. I

    What Causes Incorrect Section Placement in Static Equilibrium and Torque?

    wrong section
  18. M

    Minimum coefficient of static friction problem

    Homework Statement I know the diameter is 30 m and the radius is 15 The period for one revolution I suppose is some multiple of 7.03 Homework Equations The Attempt at a Solution I couldn't think of an equation where friction was involved where rotational motion was concerned. I...
  19. G

    Static electricity - Quantity of charge induced.

    Hi all, Let us say I have rubbed cat fur with nylon. Is there any relation for determining the amount of charge (in Coulombs) induced on either of the materials? Thanks in advance.
  20. N

    Circular Motion with static friction

    1. Homework Statement A bus passenger has her laptop sitting on the flat seat beside her as the bus, traveling at 10.0 m/s, goes around a turn with a radius of 25.0 m. What minimum coefficient of static friction is necessary to keep the laptop from sliding? Given: V = 10 m/s r = 25.0...
  21. H

    Dynamic balancing without static balancing

    static balancing is when the center of gravity is in the axis of rotation. dynamic balancing is when the central principal axis of inertia is parallel and coincident with the axis of rotation. my question is, even if its theoretically, can you have dynamic balancing without static...
  22. J

    Static friction between two stacked blocks a 3rd law pair?

    I'm trying to get my head around this scenario: The blocks are at rest, despite the tension forces acting on them. It is obvious that the static friction acting on A from B is 20N to the right for A to remain at rest (the max might be a lot higher). But does this produce an equal and...
  23. R

    Static Pressure Formula for Tornado Type Wind Turbine

    Hi Everyone, I'm interested in a formula posted in an invention patented 30 years ago for a Tornado Type Wind Turbine. The wind blows through an opening in a tube shaped tower and is turned onto itself. This causes the wind speed to increase to three times the ambient wind speed (and the...
  24. T

    How Do You Calculate the Mass of a Beam in Static Equilibrium?

    Homework Statement Suppose we take a 1 m long uniform bar and support it at the 22 cm mark. Hanging a 0.29 kg mass on the short end of the beam results in the system being in balance. Find the mass of the beam. Homework Equations \tau=F*r The Attempt at a Solution I set it up so that...
  25. B

    Difference between coefficient of static and kinet friction

    Lets say you have a block on a horizontal surface connected to a pulley and then a weight hanging over the edge. If its not moving then the force applied which is just the mass of the weight x gravity is equal to the force of static friction μsmblockg. So that means μs = the mass of the...
  26. A

    Will Box Y Remain in Equilibrium?

    Homework Statement A 8-kg homogeneous box X is resting against another 20-kg homogeneous box Y at an angle such that its diagonal BC is horizontal as shown in Figure Q1. The angle of static friction between box X and the floor is 45° and that between box Y and the floor is 30°. Treat the...
  27. H

    Understanding the Impact of Static and Sudden Forces on Pain Perception

    I keep a book that his weight is 10kg(100 Newton,lets say). My hand will feel a force of 100 Newtons. Now let's say that the book is up of a desk,and with some force(lets say 60 Newtons) I hit that. Why I will feel more pain the second time,while I feel less Newtons? It is about the time?
  28. V

    Kinetic friction or static friction

    Can anyone explain this case ? If a moving box is pulling with a force F and the kinetic friction is 0.4F, of course, it will move in the direction of applied force with an acceleration and the net force is 0.6F But what if the force suddenly decreases to 0.3F ? The box is still moving so the...
  29. O

    What is the maximum force of static friction for the block?

    Homework Statement A string is tied to a 4.4 kg block and 120g hanging bucket. Students add 20g washers one at a time to the bucket. The student are unaware that the coefficient of static friction for the block on the table is 0.42. A) what is the maximum force of static friction for the...
  30. O

    What is the Coefficient of Static Friction for Two Tied Objects?

    Homework Statement Two objects are made of identical material and are tied together with string. The first object has a mass of 5.0kg and the second object has a mass of 3.0kg. Students measure the maximum force of static friction as 31.4N to move both objects across a horizontal surface. a)...
  31. E

    What Is the Coefficient of Static Friction on a 17 Degree Incline?

    1. A 1760 N force pulls a 266 lg load up a 17 degree incline. What is the coefficient of static friction between the load and the incline? 2. Coefficient of station friction = Force(Static)Max / Normal(supporting) force The Attempt at a Solution
  32. T

    3D Scanner using static electric fields

    Greetings PFers, Can someone help explain to me the difficulties of designing a device which utilizes static electric fields to map an objects’ internals and externals? My understanding is that as a electric field propagates through matter, it encounters absorption. I envision a device...
  33. L

    Questions about static electricity in automobiles

    So, I don't want to disclose why I want to know about this because its to do with a friends invention and it would be unfair to publish too much information without his consent. That's my disclosure so to speak. I'm interested in how static electricity is managed in vehicles. I remember...
  34. T

    Coefficient of static friction calculation

    Homework Statement I have a box on a horizontal plane. Given data: mass = 0.25kg height of object = 14 cm width of object = 9cm Calculate the coefficient of static friction. Homework Equations μs = Ff/N (N is the normalforce) F = Ff = μ*N mg = 2.45 Newton The Attempt at a...
  35. PsychonautQQ

    Can Static Friction Do Work on an Object?

    Homework Statement My textbook has a true or false problem that says Static Friction can never do work on an Object and they say that it's false.. How can static friction do work?
  36. A

    Static friction(Impending motion)

    Homework Statement A 100 kg block rests as shown in Figure on a wedge of negligible weight. Knowing that the coefficient of static friction is 0.25 at all surfaces of contact, determine: (g = 9.81 m/s2) a) the angle θ (degree) for which sliding is impending and b) compute the...
  37. S

    Finding Tension and Resultant Force | 3000N Cable Force Problem

    Homework Statement Q) A transmission cable AB exerts a 3000N force on the pole in the direction of the tangent to the cable at A (see Fig. 1). Determine the required tension T in the wire AB if the resultant of the two forces at A is to be vertical (1 point). Find the magnitude R of the...
  38. M

    Constraints and Static Determinacy

    Hello, Is it possible for a structure to be completely constrained and statically indeterminate, or partially constrained and statically determinate? Or does one come with the other automatically? I am having difficulties determining if a structure is partially constrained or completely...
  39. C

    Solving Static Equilibrium: Ʃτ = 0, ƩF = 0

    http://postimg.org/image/4ctmvwzx3/ Homework Equations Ʃτ = 0 ƩF = 0 The Attempt at a Solution summing the torques for each piece, i found Ʃτ = MgLsin(90-ψ) - mgIsin(ψ) = 0 MgLsin(90-ψ) = mgIsin(ψ) ML/mI = sin(ψ)/sin(90-ψ) = sin(ψ)/cos(-ψ) = tan(ψ) so ψ =...
  40. 0

    Static Equilibrium Two Pulleys and Weights With Ring

    I have a problem. Lets say there were two pulleys put at equal height. You have a metal ring and attach three wires to it. At the end of each wire, have three weights of mass w. One weight hangs down, one weight goes over one pulley and the other over the other pulley. The system goes to...
  41. M

    How Does Height Influence Torque in Static Equilibrium?

    So with this problem, I have been thinking about it. Since it is in equilibrium, I know the sum of forces and torques will be equal to zero. However, I'm not sure how the height, h, fits into this. I know the weights have a force and are a distance away from that fulcrum, d and 2d, so I could...
  42. A

    Static friction in body with no intention to move

    Suppose a block of mass 5 kg is resting on a horizontal surface and coefficient of static friction between block and surface is 0.2. If the block is pushed against a vertical wall with a force of 200 N, will the static friction oppose the force? The body has no intention of moving as it is...
  43. I

    Propagation of static electric field

    At what speed does a change in a static electric field propagate through a medium? I understand that through a vacuum it's the speed of light, but through a medium such as a conductor or insulator how fast will this change propagate? In classical electrodynamics, how do we model the...
  44. C

    Static pressure in Air Handling Unit

    what will happen if static pressure in supply duct is higher than the fan compartment in AHU?? or vice-versa thanks
  45. S

    What is the velocity profile of a truck or tractor pull?

    Are there any fans of truck or tractor pulls out there? I am trying to understand what is happening to the coefficient of friction as the sled transitions from kinetic friction back to static friction. It is a fairly complicated model... The weight imposed on the front plate of the drag...
  46. Y

    Does Laplace and Poisson's equation have to be for static condition?

    I read from the PDE book about Laplace equation in static condition ie ##\frac {\partial U}{\partial t}=0##. But is it true that even if U is time varying ie ##U=U(x,y,z,t)##, you can still have Laplace and Poisson's equation at t=k where k is some fixed value. ie...
  47. T

    Static Electricity: Positive & Negative Charges

    Homework Statement Homework Equations The Attempt at a Solution i chose positive and negative but i am not sure.
  48. A

    Static Charge Induction: Rod and Sphere Experiment

    Homework Statement Homework Equations The Attempt at a Solution I think it depends on induction so when the rod is brought close, the spheres will be positively charged. When they move away of it, A will get a negative charge "by induction" and B will get a positive one
  49. J

    Converting from Static to Dynamic Understanding the Darcy Weisbach

    Trying to get my head around something with the Darcy Weisbach. It is used to calculate the head loss of a moving fluid within a pipe. So for example if we take a pipe with an entry point 6m above a datum plane and an exit point 1m above the same datum plane. The pipe length is very long, say...
  50. C

    Static electric and magnetic fields and energy.

    It is well known that all sorts of systems tend towards minimal potential energy. I was wondering if this applies to static electric fields also, i.e. is an electric field such that it's energy integrated over all space is minimal? For example if we have a bounded source free region and if the...
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