11 A student investigates the magnetic fields produced by magnets.(a)Describe a method he could use to determine the shape and direction of the magnetic field produced by a bar magnet.You may use a diagram to help your answer.(3)(b)The diagram shows the shape of the magnetic field around...
10 (a)State the nature of an α-particle.••■.[1](b)Describe how an electric field between two charged plates could be used to determine whether a beam of particles consists of α- or β-particles.[2](c)Describe the path of y-rays in a magnetic field.■.[1](d)State what ...
aHall effect. The Phenomenon whereby a force is brought to bear on a moving electron or hole by a Magnetic Field That Is Applied perpendicular to the direction of motion. The force direction is perpendicular to both the magnetic field and the particle motion directions. 霍尔效应。 现象,藉以力...
apreamp out 前置放大器 [translate] aThe 2D representation of the edge value of magnetic vector potential A is used to describe the magnetic field. 磁性传染媒介潜力A的边缘价值的第2个表示法用于描述磁场。 [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语翻译 西班牙语翻译 ...
describe the magnetic field. The edge value ofAis defined as a product of the disk length lm and the Az component of A . The magnetic coupling between the disks is neglected. However, the electrical connections of sections and the rotor w 磁性传染媒介潜力A的边缘价值的第2个表示法用于描述...
Theoretical reinvestigation of a so-called field-induced spin-density-wave (FISDW) phase diagram in a magnetic field in quasi-one-dimensional compounds (TMTSF) 2 X (X=PF 6 , ClO 4 , AsF 6 , etc.) has revealed some novel qualitative features. Among them are (1) the FISDW wave vector...
5(a)Any three from:kinetic energy (of wind/air)turns /drives turbine (blades)(turbine blades)turn generatorcoil turns in magnetic field5(b)0)any one from:a dilute source of energydependent on weather/intermittent supply5(b)(im)any two from:renewable source of energyno atmospheric pollution...
The end of Mars' magnetic field NASA/GSFC The event that set the Martian climate on its inexorable course to becoming the dry, dusty world it is today was the cooling of its metallic core and the subsequent death of its magnetosphere. Mars' small size and distance from the sun meant that...
aFerrimagnetism. Permanent and large magnetizations found in some ceramic materials. It results from antiparallel spin coupling and incomplete magnetic moment cancellation 铁氧体磁性。 永久和大磁化在一些陶瓷材料发现了。 它起因于antiparallel旋转联结和残缺不全的磁矩取消[translate] ...
aA prototype portable high-gradient magnetic separator is being developed for in vivo magnetic separation from human blood flow. In this separator design, an array of biocompatible capillary tubing and magnetizable wires is immersed in an external magnetic field, which is generated by two parallel ...