Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 27, Problem 62P
To determine
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Chapter 27 Solutions
Physics for Scientists and Engineers
Ch. 27 - Prob. 1PCh. 27 - Prob. 2PCh. 27 - Prob. 3PCh. 27 - Prob. 4PCh. 27 - Prob. 5PCh. 27 - Prob. 6PCh. 27 - Prob. 7PCh. 27 - Prob. 8PCh. 27 - Prob. 9PCh. 27 - Prob. 10P
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- A wire of nonmagnetic material, with radius R, carries current uniformly distributed over its cross section. The total current carried by the wire is I. Show that the magnetic energy per unit length inside the wire is μ0I2/16π.arrow_forwardThe Hall effect can be used to determine the density of mobile electrons in a conductor. A thin strip of the material being investigated is immersed in a magnetic field and oriented so that its surface is perpendicular to the field. In a particular measurement, the magnetic field strength was 0.767 T, the strip was 0.108 mm thick, the current along the strip was 2.87 A, and the Hall voltage between the strip's edges was 2.65 mV. Determine the number density n of mobile electrons (in the order of 1025) in the material. (e = 1.6 x 10-19 C) NOTE: You do not need to include 1025 in your answer. Type your answer...arrow_forwardA long copper strip 1.2 cm wide and 0.50 mm thick is placed in a 1.4 T magnetic field as shown in the figure. When a steady current of 16 A passes through it, the Hall emf is measured to be 1.06 µV. Determine the density of free (conducting) electrons (number per cubic meter) in the copper. X X EH - X_× X_ ×['X _ d = 1.2 cm X X X хх Darrow_forward
- Measurements in mines and boreholes indicate that Earth’s interior temperature increases with depth at the average rate of 30 C°/km. Assuming a surface temperature of 10°C, at what depth does iron cease to be ferromagnetic? (The Curie temperature of iron varies very little with pressure.)arrow_forwardA strip of copper is placed in a uniform magnetic field of magnitude 3.5 T. The Hall electric field is measured to be 2.0 x 10-3 V/m. (a) What is the drift speed of the conduction electrons m/s)? m/s (b) Assuming that n = 8.0 x 1028 electrons per cubic meter and that the cross-sectional area of the strip is 4.4 x 10-6 m², calculate the current in the strip (in A). (in m³/C)? nq (c) What is the Hall coefficient m3/carrow_forwardA 0.50 T magnetic field is applied to a paramagnetic gas whose atoms have an intrinsic magnetic dipole moment of 1.0* 10^23 J/T. At what temperature will the mean kinetic energy of translation of the atoms equal the energy required to reverse such a dipole end for end in this magnetic field?arrow_forward
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