Physics, 07.04.2020 16:53 estherdinhllama

You have 100 m of fine copper wire with a radius of 0.5 mm. Having only a 12 V power supply that can be treated as ideal, a pencil, and a bag of long nails made from 99.8% pure iron (relative magnetic permeability of 200) you need to make a magnet that would produce a strong magnetic field. A. (2 points) What is the resistance of the 100 m of the given copper wire? Assume the resistivity of copper to be LaTeX: \rho=\:1.68\times10^{-8}\:\Omega\cd ot mrho = 1.68 × 10 − 8 Ω ⋅ m. B. (2 points) Assuming that you will use all the wire, what will be electric current if you connect the wire to the power supply? C. (4 points) Would you build a toroid? A solenoid? A simple loop? Justify your choice. D. (6 points) For the chosen design of the magnet, describe how you would build it and estimate the magnetic field that you can achieve with it. g

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 10:00, andresduenas72

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

Answers: 1

continue

Physics, 22.06.2019 10:30, arigar

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Answers: 3

continue

Physics, 22.06.2019 16:50, Jstylez1789

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =

Answers: 1

continue

Physics, 22.06.2019 21:20, Animallover100

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.

Answers: 3

continue

You know the right answer?

You have 100 m of fine copper wire with a radius of 0.5 mm. Having only a 12 V power supply that can...