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
Physics, 21.06.2019 19:30, davidsteck99
A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off
Answers: 2
Physics, 22.06.2019 04:00, jaejaeJae9534
Acompound machine is also called a machine. a. force b. simple c. complex d. directional
Answers: 1
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
You have 100 m of fine copper wire with a radius of 0.5 mm. Having only a 12 V power supply that can...
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