immc数学建模2023报名即将开始，在哪报名？
immc数学建模2023报名即将开始！是一项面向全球中学生的国际性新型数学建模学术活动。参赛成绩是申请美国、香港、新加坡名校的加分参考依据；有机会获得国内大学自主招生加分。所以你准备好了吗？最后时间，大家...
nec报名截止日期还有一个月，nec竞赛难吗？
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Edexcel A Level Physics:复习笔记8.6 Interpreting Particle Tracks
Interpreting Particle Tracks Particle detectors that count particles, like Geiger-Muller tubes, are useful but they cannot distinguish different types of particle Modern detectors can show the path...
Edexcel A Level Physics:复习笔记8.5 Radius of a Charged Particle in a Magnetic Field
Radius of a Charged Particle in a Magnetic Field A charged particle in uniform magnetic field which is perpendicular to its direction of motion travels in a circular path This is because the magnet...
2023香港AP考点10月13日正式开放报名！
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Edexcel A Level Physics:复习笔记8.4 Particle Accelerators & Detectors
Particle Accelerators & Detectors Linear Accelerators A linear accelerator (LINAC) is a type of particle accelerator that accelerates ions (charged particles) to very high speeds in straight li...
Edexcel A Level Physics:复习笔记8.3 Thermionic Emission
Thermionic Emission When metals are heated, the conduction electrons within them gain energy If these electrons gain sufficient energy, they are able to leave the surface of the metal This is known...
Edexcel A Level Physics:复习笔记8.2 The Nuclear Model of the Atom
Alpha Particle Scattering Evidence for the structure of the atom was discovered by Ernest Rutherford in the beginning of the 20th century from the study of alpha particle scattering This structure ...
Edexcel A Level Physics:复习笔记8.1 Nucleon & Proton Number
Nucleon & Proton Number Atomic symbols are written in a specific notation as shown below: Atomic symbols show the proton number and nucleon number The top number A represents the nucleon...
Edexcel A Level Physics:复习笔记7.22 Root-Mean-Square Current & Potential Difference
Root-Mean-Square Current & Potential Difference The root-mean-square (rms) current Irms is defined by the equation: Where: I0 = peak current (A) The rms voltage Vrms is defined by the eq...
Edexcel A Level Physics:复习笔记7.21 Alternating Currents & Potential Differences
Alternating Currents & Potential Differences An alternating current (a.c) is defined as: A current which periodically varies between a positive and negative value This means the direction of an...
Edexcel A Level Physics:复习笔记7.20 Faraday's Law
Faraday's Law Faraday's Law connects the rate of change of flux linkage with induced e.m.f It is defined in words as: The magnitude of the induced e.m.f is directly proportional to the rate of chan...
