Modern Physics
2nd Edition
ISBN: 9780805303087
Author: Randy Harris
Publisher: Addison Wesley
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Chapter 10, Problem 75E
The magnetic field at the surface of a long Wire of radius R and carrying a current I is
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A hydrogen isotope separator contains positively ionized hydrogen H^1, with isotope of hydrogen, Deuterium D^2, and other heavy particles, and the ions were released in a potential difference of 200 Volts. The strong magnetic field of 1.4x10^-2 Tesla (out of the page), bends the ions and Deuterium is collected on separate ionic trap as shown in the figure. (Masses MH1=1.67x10^-27 kg, MD2 = 2* MH1, Q(H1, D2) = 1.6x10^-19 C)
What are the velocities of the Deuterium when exiting the plates, in unit of 10^5 m/s?
Niobium metal becomes a superconductor(with zero electrical resistance) when cooledbelow 8.3 K.The permeabilty of free space is 1.25664 ×10−6 N/A2.If superconductivity is destroyed when thesurface magnetic field exceeds 0.15 T, determine the maximum current a 3.2 mm diameter niobium wire can carry and remain superconducting.Answer in units of A.
Niobium metal becomes a superconductorwhen cooled below 9 K.The permeability of free space is 1.25664 ×10−6 N/A2.If superconductivity is destroyed when thesurface magnetic field exceeds 0.1334 T, determine the maximum current a 2.775 mmdiameter niobium wire can carry and remainsuperconducting.Answer in units of A.
Chapter 10 Solutions
Modern Physics
Ch. 10 - Prob. 1CQCh. 10 - Prob. 2CQCh. 10 - Prob. 3CQCh. 10 - Of N2,O2 , and F2 , none has an electric dipole...Ch. 10 - It takes less energy to dissociate a diatomic...Ch. 10 - Prob. 6CQCh. 10 - Prob. 7CQCh. 10 - Prob. 8CQCh. 10 - Prob. 9CQCh. 10 - Prob. 10CQ
Ch. 10 - Prob. 11CQCh. 10 - In the boron atom, the single 2p electron does not...Ch. 10 - Prob. 13CQCh. 10 - Prob. 14CQCh. 10 - Prob. 15CQCh. 10 - Prob. 16CQCh. 10 - Prob. 17CQCh. 10 - Prob. 18CQCh. 10 - Prob. 19CQCh. 10 - Prob. 20CQCh. 10 - Prob. 21CQCh. 10 - Prob. 22CQCh. 10 - In a buckyball three of the bonds around each...Ch. 10 - Prob. 24CQCh. 10 - Prob. 25ECh. 10 - Prob. 26ECh. 10 - Prob. 27ECh. 10 - Prob. 28ECh. 10 - Prob. 29ECh. 10 - Prob. 30ECh. 10 - Prob. 31ECh. 10 - Prob. 32ECh. 10 - Prob. 33ECh. 10 - Prob. 34ECh. 10 - By expanding an arbitrary U(x) in a power series...Ch. 10 - Prob. 36ECh. 10 - Prob. 37ECh. 10 - Prob. 38ECh. 10 - Prob. 39ECh. 10 - Prob. 40ECh. 10 - Prob. 41ECh. 10 - Prob. 42ECh. 10 - Prob. 43ECh. 10 - As noted in Example 10.2, the HD molecule differs...Ch. 10 - Prob. 45ECh. 10 - Prob. 46ECh. 10 - Prob. 47ECh. 10 - Prob. 48ECh. 10 - Prob. 49ECh. 10 - Prob. 50ECh. 10 - Prob. 51ECh. 10 - Prob. 52ECh. 10 - Prob. 53ECh. 10 - Prob. 54ECh. 10 - Carry out the integration indicated in equation...Ch. 10 - Prob. 56ECh. 10 - Prob. 57ECh. 10 - Prob. 58ECh. 10 - Prob. 59ECh. 10 - Prob. 60ECh. 10 - Prob. 61ECh. 10 - Prob. 62ECh. 10 - Prob. 63ECh. 10 - Prob. 64ECh. 10 - Prob. 65ECh. 10 - Prob. 66ECh. 10 - Prob. 67ECh. 10 - Prob. 68ECh. 10 - Prob. 69ECh. 10 - Prob. 70ECh. 10 - Prob. 71ECh. 10 - Prob. 72ECh. 10 - Prob. 73ECh. 10 - Prob. 74ECh. 10 - The magnetic field at the surface of a long Wire...Ch. 10 - Prob. 76ECh. 10 - Prob. 77CECh. 10 - Prob. 78CECh. 10 - Prob. 79CE
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- At saturation, when nearly all the atoms have their magnetic moments aligned, the magnetic field is equal to the permeability constant 0 multiplied by the magnetic moment per unit volume. In a sample of iron, where the number density of atoms is approximately 8.50 1028 atoms/m3, the magnetic field can reach 2.00 T. If each electron contributes a magnetic moment of 9.27 10-24 A m2 (1 Bohr magneton), how many electrons per atom contribute to the saturated Held of iron?arrow_forwardTin (Sn) has a superconductive critical temperature Tc = 3.7 K and critical magnetic field at T = 0 K equal to Bc = 31 mT. What is the maximum magnetic field Sn can sustain at the critical temperature without losing its superconducting state? What is the minimum radius required for an infinite linear wire of Sn if it is to carry a current of 200 A at T = 3.0 K whilst still in its superconducting state?arrow_forwardA sample of Si is doped with 10' phosphorus atoms /cm® , find the Hall voltage in a sample with W=500 pm, A=0.25 mm?, I= 1mA, and B,=10* Wb/cm?.arrow_forward
- The magnetic dipole moment of the gadolinium atom is about 6.3 ✕ 10−23 A · m2. (a) Calculate the maximum magnetic dipole moment (in A · m2) of a domain consisting of 1019 gadolinium atoms. (b) What current (in A) would have to flow through a single circular loop of wire of diameter 1.2 cm to produce the magnetic dipole moment you calculated?arrow_forwardA Hall probe made from a semiconductor in the form of a cube of side 1 mm is being designed to measure a magnetic field. If the carrier concentration is 5x1017/cm and the operation current density for the probe is 10 mA/cm². find the probe sensitivity in unit V/T. Assume a mobility of 0.5 m2/Vs.arrow_forwardThe force on a magnetic moment z in a nonuniform magnetic field Bz is given by Fz=zdBzdz If a beam of silver atoms travels a horizontal distance of 1 m through such a field and each atom has a speed of 100 m/s, how strong must the field gradient dBz/dz be in order to deflect the beam 1 mm?arrow_forward
- Check Your Understanding A Hall people consists of a copper strip, n=8.51028 electrons per cubic meter, which is 2.0 cm wide and 0.10 cm thick. What is the magnetic held when I = 50 A and the Hall potential is (a) 4.0µV and (b) 60µV?arrow_forwardConsider the original Stern–Gerlach experiment employing an atomic beam of silver, for which the magnetic moment is due entirely to the spin of the single valence electron of the silver atom. Assuming the magnetic field B has magnitude 0.500 T, compute the energy difference in electron volts of the silver atoms in the two exiting beams.arrow_forwardA sample of paramagnetic salt contains 2.0 × 1024 atomic dipoles each of dipole moment 1.5×10-23 J T-1. The sample is placed under a homogeneous magnetic field of 0.64 T, and cooled to a temperature of 4.2 K. The degree of magnetic saturation achieved is equal to 15%. What is the total dipole moment of the sample for a magnetic field of 0.98 T and a temperature of 2.8 K? (Assume Curie’s law)arrow_forward
- Determine the bohr magnetons associated with an iron atom, given that saturation magnetization is 1.7x10^6A/m , that iron has a BCC crystal structure, and that unit cell edge length is 0.2866nm.arrow_forwardIf an electron in an atom has an orbital angular momentum with ml = 2, what are the components (a) Lorb,z and (b) μorb,z? If the atom is in an external magnetic field that has magnitude 33 mT and is directed along the z axis, what are (c) the potential energy Uorb associated with the electron's orbital magnetic dipole moment and (d) the magnitude of the potential energy Uspin associated with the electron's spin magnetic dipole moment? If, instead, the electron has ml = -1, what are (e) Lorb,z, (f) μorb,z, (g) the potential energy Uorb associated with the electron's orbital magnetic dipole moment and (h) the magnitude of the potential energy Uspin associated with the electron's spin magnetic dipole moment?arrow_forwardFind τ, μ for copper, given that p = 1.55 × 10 1e-8 n-m and the number of electrons for copper n = 2.54 × 1e27 electron / m³arrow_forward
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