Ask questions and get helpful responses.
Ask a New Question
  1. Questions

physics

Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.85 m, and the mass of each is 0.077 kg. One rod is held in place above the ground, while the other floats beneath it at a distance of 8.2 10-3 m. Determine the current in the rods.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
Jenny

  1. The force (per unit length) Fₒ of interaction between two current-carrying rods is
    Fₒ = μₒ•I1•I2/2•π•x,
    μₒ =4• π•10^-7 H/m, I1 =I2 = I, x = =8.2•10^-3 m.
    F = m•g/L,
    Fₒ = F ,
    μₒ•I²/2•π•x = m•g/L,
    I = sqrt (m•g•2•π•x/ μₒ•L) =
    = sqrt(0.077•9.8•2•π•8.2•10^-3/4• π•10^-7•0.85) =191 A

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Elena

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A mixing beater consists of three thin rods, each 10.9 cm long. The rods diverge from a central hub, separated from each other by 120°, and all turn in the same plane. A ball is attached to the end of each rod. Each ball has

  2. English

    Read the passage from “To Build a Fire,” Part 2. He started to untie his moccasins. They were coated with ice; the thick German socks were like sheaths of iron half-way to the knees; and the moccasin strings were like rods of

  3. statistics

    7. a factory has a machine that makes steel rods. The length of the rods that the machine makes follows a normal distribution curve with a mean of 11.5 feet and a standard deviation of 0.3 feet. The factory manager does not want

  4. Physics

    A governor (centrifugal pendulum) consists of two 200–g spheres attached by light, rigid 10.0–cm rods to a vertical rotating axle. The rods are hinged so that the spheres swing out from the axle as they rotate with it.

  1. Physics

    Two 8 cm long thin glass rods uniformly charged to +10 nC are placed side by side, 4.0 cm apart. What are the electric field strengths E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm to the right of the rod on the left along the

  2. physics

    Four masses are arranged as shown. They are connected by rigid, massless rods of lengths 0.50 m and d = 0.73 m. What torque must be applied to cause an angular acceleration of 0.63 rad/s2 about the axis shown? 4 kg 3 kg 5 kg 2 kg

  3. PHYSICS

    Two metal rods -- one copper the other aluminum -- are connected in series, as shown in the figure below. Note that each rod is 0.525 m in length, and has a square cross section 1.25 cm on a side. The temperature at the copper end

  4. Physics

    As measured from centre ice, a single wildly cheering hockey fan can produce a sound intensity level of 60dB. What sound intensity level would be produced by 20 000 cheering fans? --------- If sound waves travel through the ground

  1. Physics

    A solid circular disk has a mass of 1.67 kg and a radius of 0.144 m. Each of three identical thin rods has a mass of 0.351 kg. The rods are attached perpendicularly to the plane of the disk at its outer edge to form a three-legged

  2. science

    What is the function of the turbine in a nuclear reactor? to circulate the water back to the reactor after energy is removed from it to produce electricity to convert the heat energy of the water into mechanical energy to mix the

  3. physics

    Three identical thin rods, each of length L and mass m, are welded perpendicular to one another as shown below. The assembly is rotated about an axis that passes through the end of one rod and is parallel to another. Determine the

  4. Physics

    The rigid object shown in Fig. 10-63 consists of three balls and three connecting rods, with M = 1.5 kg, L = 0.67 m, and θ = 32°. The balls may be treated as particles, and the connecting rods have negligible mass. Determine the

Still need help? You can ask a new question.