Uniform Definition and 1000 Threads

A uniform is a type of clothing worn by members of an organization while participating in that organization's activity. Modern uniforms are most often worn by armed forces and paramilitary organizations such as police, emergency services, security guards, in some workplaces and schools and by inmates in prisons. In some countries, some other officials also wear uniforms in their duties; such is the case of the Commissioned Corps of the United States Public Health Service or the French prefects. For some organizations, such as police, it may be illegal for non members to wear the uniform.

View More On Wikipedia.org
Recent contents Top users
  1. woprxcpe1704tks

    Hollow Sphere with Uniform Surface charge

    Homework Statement [/B]Homework Equations Poynting's Theorem S = 1/μ0 (E x B) Momentum = p = μ0ε0 ∫ S dτ The Attempt at a Solution My strategy was to treat the hollow sphere as a point charge (by Gauss' Law), so E = 1/4πε0 Q/a2. I believe the magnetic field would be B = 2/3μ0M (where M is the...
  2. R

    Can Uniform Points on a Circle be Derived from the Standard Normal Distribution?

    Is it possible to derive the standard normal distribution from using polar form p = r*e^(i*v) to distribute uniform points along the contour of a circle? I've read that it is possible to randomize points like that using X and Y values with normal distribution by normalizing each point, but I...
  3. S

    Astronomical source extraction in non uniform background

    I have been working with some Herschel images and I am finding it difficult to extract the astronomical sources from the image. The image background is extremely non uniform so i am not able to differentiate between the background and the source. I used some tasks in HIPE like source extractor...
  4. H

    Need help with generating a uniform weak magnetic field

    Hi, I'm developing a new bio reactor, which in this instance you can think of as just a perspex fish tank. But have come across an unusual requirement to apply a roughly 0.01T magnetic field across the volume of the tank with mainly water in it. No position in the tank can be less than 0.08T and...
  5. M

    Roller coaster - uniform circular motion

    Hi, I have been studying up on circular motion in the vertical plane and I am happy with all the math/theory that I have read explaining the normal force and weight force and the feeling of being "heavier" and "lighter". My question is about the top of the hill/ride, The forces acting on you at...
  6. burashka5719

    Does space contraction affect planet evolution?

    Hello, from time to time I got question in physics for which I can't readily find answers. I hope I can get answers here. Here is my current one: Usually textbooks state that space contracts in direction parallel to direction of motion. It sounds strange, because time changes uniformly, and as I...
  7. C

    Torque of charged rotating disc in uniform magnetic field

    Hi, I'm having an issue with finding a starting point for the following problem. I've looked through my magnetism and electrodynamic notes but was unable to find a starting point. Could someone please help direct me on the correct path? Thank you. Homework Statement A thin circular disc of...
  8. S

    Uniform Circular Motion and Centripetal acceleration

    Homework Statement For a scene in a movie, a stunt driver drives a 1.20✕ 103 kg pickup truck with a length of 4.65 m around a circular curve with a radius of curvature of 0.333 km (Fig. 7.29). The truck is to curve off the road, jump across a gully 10.0 m wide, and land on the other side 2.96 m...
  9. a lone fishy

    Intro to Uniform Circular Motion/Centripetal Acceleration

    Hi everyone, 1. Homework Statement Homework Equations 1) centripetal acceleration = v^2 / R 2) centripetal acceleration = 4 pi^2 R / T^2 3) average velocity = displacement / time[/B]The Attempt at a Solution For #1a I first found the displacement of A to B. And then divided that by...
  10. S

    Floating Cylinder of Uniform Density

    A solid cylinder of uniform density of 0.85 g/cm3 floats in a glass of water tinted light blue by food coloring...
  11. J

    Gravitational Effect of Uniform Mass on Earth's Surface

    Hey guys! What would be the gravitational effect of Earth on it's surface, if somehow the density of mass was uniform and equal to 2/5 of the real value? Assuming that the size e shape os the planet doesn't change.
  12. V

    Finding uniform transmission condition

    We have never discussed about constant mechanical power transfer for the linear case, as against rotational well documented gear transmission. The energy acquired by linear motion, if varies linearly, then 0.5mv^2 must have constant differential. Trying it, if u=0, v=at...
  13. T

    Uniform Circular Motion for rubber stopper

    Homework Statement Picture- https://flic.kr/p/zi1ays The rubber stopper will be spun at a constant speed in a horizontal circle. The hanging mass is only in contact with the string.[/B] A) For the rubber stopper, state the forces and what they are exerted by and on B) Does the net force have...
  14. ADMO

    Solving Simple Uniform Motion Problem: Marlene's Bicycle Ride to Jon's House

    Homework Statement Marlene rides her bicycle to her friend Jon's house and returns home by the same route. Marlene rides her bike at constant speeds of 6 mph on level ground, 4 mph when going uphill, and 12 mph when going downhill. If her total time riding was 1 hour, how far is it to Jon’s...
  15. I

    Understanding convergence in norm, uniform convergence

    Homework Statement Find an example of a sequence ##\{ f_n \}## in ##L^2(0,\infty)## such that ##f_n\to 0 ## uniformly but ##f_n \nrightarrow 0## in norm. Homework Equations As I understand it we have norm convergence if ##||f_n-f|| \to 0## as ##n\to \infty## and uniform convergence if there...
  16. C

    Independent Process Probability distribution

    A manufacturer has designed a process to produce pipes that are 10 feet long. The distribution of the pipe length, however, is actually Uniform on the interval 10 feet to 10.57 feet. Assume that the lengths of individual pipes produced by the process are independent. Let X and Y represent the...
  17. evinda

    MHB Solving a Boundary Value Problem: Non-Uniform vs. Uniform Partitioning

    Hello! (Wave)Consider the boundary value problem $\left\{\begin{matrix} - \epsilon u''+u'=1 &, x \in [0,1] \\ u(0)=u(1)=0 & \end{matrix}\right.$ where $\epsilon$ is a positive given constant. I have to express a finite difference method for its numerical solution. How can we know whether it...
  18. T

    The Joint PDF of Two Uniform Distributions

    Homework Statement A manufacturer has designed a process to produce pipes that are 10 feet long. The distribution of the pipe length, however, is actually Uniform on the interval 10 feet to 10.57 feet. Assume that the lengths of individual pipes produced by the process are independent. Let X...
  19. B

    Find the magnetic field of an infinite uniform surface

    Homework Statement This example is from 3rd edition of Griffiths' textbook. Ex. 5.8 on page 226 I understand that by reversing the direction of the current, sign of B is switched. but i can't get it that highlighted part. and why B doesn't have z-component? Homework EquationsThe Attempt at...
  20. B

    Particle in a uniform magnetic field

    Homework Statement A particle with charge q and kinetic energy K travels in a uniform magnetic field of magnitude B. If the particle moves in a circular path of radius R, find expressions for speed, v, and mass, m.. (Use any variable or symbol stated above as necessary.) Homework Equations...
  21. J

    Potential Outside charged metal sphere in uniform E field

    Homework Statement Find the potential outside a charged metal sphere (charge Q, radius R) placed in an otherwise uniform electric field E0. Explain clearly where you are setting the zero of potential. 2. The attempt at a solution So for this problem I figured I could exploit superposition and...
  22. L

    How Can Julie Determine Her Average Speed on Her Return Trip?

    Homework Statement "Julie drives 100 mi to her Grandmother's house. On the way, she drives half the distance at 40 mph and half the distance at 60 mph. On her return trip, she drives half the time at 40 mph and half the time at 60 mph." Homework Equations a. "What is Julies average speed on...
  23. K

    Particle's Movement in a Uniform Electric Field

    Homework Statement A particle with a mass of 1.5×10−5kg and a charge of +2.9 μC is released in a (parallel plate) uniform horizontal electric field of 11 N/C . How far horizontally does the particle travel in 0.40 s ? Homework Equations I think some of the kinematic equations are needed, but...
  24. A

    Non Uniform Electric Field Lines Problem

    Ok we know that the electric field(uniform or non uniform) is a conservative field. Imagine three horizontal electric field lines in '+X' direction separated by unequal distances let's say line 1 and 2 is separated by distance 'a' and line 2 and 3 is separted by some distance 'b' such that...
  25. Priyadarshini

    A Uniform Rod Is Attached To A Point With A String---Moments

    Homework Statement Use the principle of moments and take moments about A to show that the weight of the object O is 19 N.Homework Equations Moment=Force x perpendicular distance The Attempt at a Solution Vertical component of tension= TsinA...
  26. L

    A quick Question on Joint Uniform Distribution

    Hi, I have a quick question. If both X and Y are uniformly distributed on the unit interval [0, 1]. Can we prove that the joint distribution of (X, Y) is uniform on the unit square [0, 1]×[0, 1]? Do we need any condition to ensure the result, such as Independence between X and Y? Thanks.
  27. P

    Can a Chi2 test be used on uniform p test results?

    Not sure that I've phrased the question correctly. If you have a series of p values from a series of tests, and they're all meant to be uniformly distributed, why do you have to do a KS test on that, and not another Chi-squared test? The following is an extract from a test program's output:-...
  28. faiziqb12

    Is Centripetal Acceleration Constant in Uniform Circular Motion?

    Homework Statement i was going through uniform circular but a confusion popped out of my head . as i have read before the Rutherford atomic model was only rejected due to the fact that electrons moving in circular orbits need to accelerate constantly to maintain a uniform speed but the...
  29. B

    Uniform Circular Motion of coffee cup

    Homework Statement Kim has her coffee cup on her car's dash when she takes a corner with radius 4 m and 20 km/h. What is the minimum coefficient of static friction which would allow the coffee cup to stay there without slipping? Homework Equations Can someone show me the steps in how they...
  30. S

    Calculating Distance with Non-Uniform Acceleration

    Homework Statement A particle is moving along a straight line such that when it is at the origin it has a velocity of 5m/s. If it begins to decelerate at a rate of a=(-2.5v^(1/2)) m/s^2, where v is in m/s, determine the distance it travels before it stops Homework EquationsThe Attempt at a...
  31. J-dizzal

    Centroid of a uniform shape, using area

    Homework Statement Find the coordinates of the centroid of the uniform area. Homework Equations equations for centroid coordinates at the top of my paper. The Attempt at a Solution
  32. M

    How do I calculate an area of joint uniform distribution with domain

    This technically isn't a coursework or homework problem: I have a uniform Joint density function for the lifetimes of two components, let's call them T1 and T2. They have a uniform joint density function, both are positive it follows, and the region is 0<t1<t2<L and L is some positive constant...
  33. diracdelta

    Probability density function of uniform distribution

    Homework Statement Random variable X is uniformly distributed on interval [0,1]: f(x)=\begin{cases} 1 & \text{ if } 0\leq x\leq 1\\ 0 & \text{ else} \end{cases} a) Find probability density function ρ(y) of random variable Y=\sqrt{X} +1 I tried like this. Is it good, if no why not...
  34. B

    Angular Momentum of a Uniform Rod

    << Mentors have notified the OP to show their Attempt at a Solution >> 1. Homework Statement A uniform rod of length L1 = 1.5 m and mass M = 2.8 kg is supported by a hinge at one end and is free to rotate in the vertical plane. The rod is released from rest in the position shown. A particle of...
  35. G

    Uniform circular motion with friction

    I recently took an exam in my engineering mechanics class and passed the exam except for one question. I have been trying to solve this question after the fact and determine the solution, however neither I nor several engineering tutors have had any success. The professor refuses to give...
  36. ognik

    MHB Range of Uniform convergence of dirchlet series

    Find the Range of Uniform convergence of $ \zeta\left(x\right) = \sum_{n=1}^{\infty}\frac{1}{{n}^{x}} $ Using the Weierstrass-M test, I get this converges for $ 1 \lt x \lt \infty $ But the book's answer is $ 1 \lt s \le x \lt \infty $? I have scoured the book but can't see why they say it...
  37. J-dizzal

    Uniform circular motion problem

    Homework Statement A police officer in hot pursuit drives her car through a circular turn of radius 356 m with a constant speed of 70.9 km/h. Her mass is 57.1 kg.What are (a) the magnitude and (b) the angle (relative to vertical) of the net force of the officer on the car seat? (Hint: Consider...
  38. J-dizzal

    Uniform circular motion of a particle problem

    Homework Statement A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 3.30 s, it is at point (5.10 m, 6.80 m) with velocity (3.90 m/s)## \hat j ## and acceleration in the positive x direction. At time t2 = 9.90 s, it has velocity...
  39. J-dizzal

    Particle Uniform circular motion problem

    Homework Statement A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 3.30 s, it is at point (5.10 m, 6.80 m) with velocity (3.90 m/s) ## \hat j ##and acceleration in the positive x direction. At time t2 = 9.90 s, it has velocity...
  40. T

    Tension and Uniform Circular Motion (no r, ω, θ)

    Homework Statement A 0.020-kg mass is attached to a 1.2-m string and moves in a horizontal circle with a constant speed of 1.50 m/s, as shown in the figure. What is the measure of angle θ? What is given: m = 0.020kg v = 1.50 m/s L = 1.2 m Homework Equations Lengths L = 1.2m Lsinθ = r...
  41. Coffee_

    Understanding the Proof for Uniform Continuity on Compact Intervals

    I would appreciate it if someone could explain the steps in the reasoning of the following statement. This is not a homework assignment or anything. Let ##U \subseteq R^{n}## be compact and ##f:U\to R## a continuous function on ##U##. However f is not uniformly continuous. Then there exists an...
  42. kostoglotov

    Uniform Circular Motion: a concept question

    Homework Statement A particle moving along a straight line can have nonzero acceleration even when its speed is zero (for instance, a ball in free fall at the top of its path). Can a particle moving in a circle have nonzero centripetal acceleration when its speed is zero? If so, give an...
  43. B

    What is the instantaneous velocity of an object moving uniformly in circles?

    Homework Statement An object is moving uniformly in circles with a radius of 5m and a frequency of 2 Hz. What is its instantaneous velocity? Homework Equations [/B]The Attempt at a Solution The problem i am dealing with is the frecuency. I am not here for an answer or to cheat. I am...
  44. T

    Conceptual Uniform Circular motion problem?

    Homework Statement This isn't a homework problem, but I was just thinking of the following question: Suppose that a merry go round spins with a constant speed (so its radially accelerating towards the center), and a man want to jump onto the merry go-round while its spinning. In what way...
  45. Y

    Difference between continuity and uniform continuity

    I noticed that uniform continuity is defined regardless of the choice of the value of independent variable, reflecting a function's property on an interval. However, if on a continuous interval, the function is continuous on every point. It seems that the function on that interval must be...
  46. 1

    Uniform Circular Motion question

    1. The problem The answer is A. Homework Equations x = Acoswt y = Asinwt The Attempt at a Solution C is not correct because the x & y positions are in terms of sin & cos, so the acceleration can't be constant. D is not correct because x & y are oscillating in value. E is not correct because...
  47. P

    Counterintuitive uniform bar torque question

    The uniform bar in the attached diagram pivoted onto a wall on its center of mass and rotated an angle theta>0 from the horizontal should theoretically stay in static equilibrium because all torques are balanced, right? How come trying to do this in real life usually leads to the bar swinging...
  48. CAH

    Statistics uniform distribution problem

    It's hard to type this out as there is a diagram and notation I can't find on the key board so I've attached an image of the question and answer. I've explained my solution below however I've also attached an image if it's too confusing with the lack of symbols! Problem involves uniform...
  49. D

    Can current be induced in a uniform magnetic field?

    Currently doing my A2 Levels and have just been revising over electromagnetic induction. The general consensus seems to be that current can only be induced in a changing magnetic flux.The textbook I'm using constantly refers to cutting a magnetic field, i.e. moving a wire relative to a field, to...
  50. S

    Find induced charge on conducting cube in uniform field

    Problem statement, equations, and work done: A perfectly conducting cube is placed in a uniform electric field in the x direction (see attached). Step1 : Use Gauss's law to determine the electric field inside the cube.##\phi_E = 2E(r)A = \frac{q}{\epsilon_0} →...
Back
Top