72KB - NZQA
... mathematical solutions, the information may not be directly usable or immediately obvious. Demonstrate comprehensive understanding involves writing statements that demonstrate understanding of connections between concepts. ...
... mathematical solutions, the information may not be directly usable or immediately obvious. Demonstrate comprehensive understanding involves writing statements that demonstrate understanding of connections between concepts. ...
EOC_chapter22
... is applied in the y direction. If the charge carriers are positive, the magnetic force deflects them in the z direction. Positive charge accumulates on the top surface of the sample and negative charge on the bottom surface, creating a downward electric field. In equilibrium, the downward electric ...
... is applied in the y direction. If the charge carriers are positive, the magnetic force deflects them in the z direction. Positive charge accumulates on the top surface of the sample and negative charge on the bottom surface, creating a downward electric field. In equilibrium, the downward electric ...
Charles Kittel, Introduction to Solid State Physics, 8th Edition
... Solid State Physics is a vast field which is still growing. It was traditionally linked with areas of materials science, chemistry and engineering, but has more recently developed common interests with biology, biochemistry, biotechnology and medicine. Solid State Physics deals with the properties ( ...
... Solid State Physics is a vast field which is still growing. It was traditionally linked with areas of materials science, chemistry and engineering, but has more recently developed common interests with biology, biochemistry, biotechnology and medicine. Solid State Physics deals with the properties ( ...
Physics 212 Spring 2009 Exam 2 Version C
... An isolated spherical conductor of radius 15 cm is charged to 2 kV and has a capacitance of 16.69 pF. What would the capacitance be if the sphere is charged to 7 kV? z*02*1.19 pF y*02*233.66 pF w*05*58.42 pF x*05*4.77 pF v*10*16.69 pF Solution or Explanation The capacitance does not change unless th ...
... An isolated spherical conductor of radius 15 cm is charged to 2 kV and has a capacitance of 16.69 pF. What would the capacitance be if the sphere is charged to 7 kV? z*02*1.19 pF y*02*233.66 pF w*05*58.42 pF x*05*4.77 pF v*10*16.69 pF Solution or Explanation The capacitance does not change unless th ...
Physics Week 3(Sem. 2)
... indefinitely without the need of an EMF. Currents have persisted in superconductors for many years without measureable decay. In contrast, the current in a nonsuperconducting material drops to zero almost immediately after the EMF is removed. Many metals become superconductors only at very l ...
... indefinitely without the need of an EMF. Currents have persisted in superconductors for many years without measureable decay. In contrast, the current in a nonsuperconducting material drops to zero almost immediately after the EMF is removed. Many metals become superconductors only at very l ...
phys202 – spring 2009
... that the separation between the wires is 0.016 m. By applying an external magnetic field (created by a source other than the wires) it is possible to cancel the mutual repulsion of the wires. This external field must point along the vertical direction. (a) Does the external field point up or down? ...
... that the separation between the wires is 0.016 m. By applying an external magnetic field (created by a source other than the wires) it is possible to cancel the mutual repulsion of the wires. This external field must point along the vertical direction. (a) Does the external field point up or down? ...
Cu -Materials — Crystal Chemistry Meets Magnetism
... that prevents compounds such as Li2CuO2 from being described via a simple nearest neighbor Heisenberg model [12,13]. Cuprates such as Sr2CuO3 containing corner-sharing CuO4 squares have far smaller second neighbor interactions, of the order J1/J2 ~ 15, and yet, these must be taken into account to ge ...
... that prevents compounds such as Li2CuO2 from being described via a simple nearest neighbor Heisenberg model [12,13]. Cuprates such as Sr2CuO3 containing corner-sharing CuO4 squares have far smaller second neighbor interactions, of the order J1/J2 ~ 15, and yet, these must be taken into account to ge ...
Notes - Magnetism and Electromagnetism
... (a) Does the electron follow the exact same circular path that the proton followed? The electron would follow a path with a smaller radius of curvature with opposite helicity (i.e. counter‐clockwise vs. clockwise or vice‐versa) (b) To make the electron follow the exact same circular path as the pr ...
... (a) Does the electron follow the exact same circular path that the proton followed? The electron would follow a path with a smaller radius of curvature with opposite helicity (i.e. counter‐clockwise vs. clockwise or vice‐versa) (b) To make the electron follow the exact same circular path as the pr ...
Problems with kinematic mean field electrodynamics at high
... 3 T E C H N I Q U E S F O R C A L C U L AT I N G α A N D β In order to fix ideas, let us consider a turbulent isotropic homogeneous flow, which may or may not be helical, at high Rm in a periodic domain. We assume further that the velocity has a well-defined correlation length and, where necessary ...
... 3 T E C H N I Q U E S F O R C A L C U L AT I N G α A N D β In order to fix ideas, let us consider a turbulent isotropic homogeneous flow, which may or may not be helical, at high Rm in a periodic domain. We assume further that the velocity has a well-defined correlation length and, where necessary ...
Electromagnetic induction: physics and flashbacks
... the radius) acts as a battery that produces a current in its own resistance: therefore, the potential difference between two points arbitrarily chosen on a circle is zero. Hence, as it must be, each circle is an equipotential line. The observed phenomenon may be described as due to an increased radi ...
... the radius) acts as a battery that produces a current in its own resistance: therefore, the potential difference between two points arbitrarily chosen on a circle is zero. Hence, as it must be, each circle is an equipotential line. The observed phenomenon may be described as due to an increased radi ...
PhD Thesis 2016 Prof. Xavier Obradors Berenguer
... Bibliography......................................................................................................... 89 ...
... Bibliography......................................................................................................... 89 ...
Superconducting properties of vacuum in strong magnetic field
... φ ⌘ |φ| eiϕ is an electrically charged scalar field which plays the role of a scalar field of Cooper pairs. Without loss of generality, we assume that the boson field φ carries elementary electric charge e. The potential (2) is characterized by the mass parameter m and the self-interaction coupling ...
... φ ⌘ |φ| eiϕ is an electrically charged scalar field which plays the role of a scalar field of Cooper pairs. Without loss of generality, we assume that the boson field φ carries elementary electric charge e. The potential (2) is characterized by the mass parameter m and the self-interaction coupling ...
EE 333 Electricity and Magnetism, Fall 2009 Homework #5 solution
... (a) The electric flux density, the electric field intensity, and the polarization in the two regions inside and the air outside the cable. (b) The polarization surface charge at ρ = a, and ρ = r1 . (c) The polarization charge density in region 2. The inner conductor is charged to a charge of ρl per ...
... (a) The electric flux density, the electric field intensity, and the polarization in the two regions inside and the air outside the cable. (b) The polarization surface charge at ρ = a, and ρ = r1 . (c) The polarization charge density in region 2. The inner conductor is charged to a charge of ρl per ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.