IB DP Physics: SL复习笔记4.3.3 Superposition
Superposition The principle of superposition states that: When two or more waves meet, the resultant displacement is the vector sum of the displacements of the individual waves The principle of sup...
IB DP Physics: SL复习笔记4.3.2 Amplitude & Intensity
Amplitude & Intensity Intensity The intensity of a wave is defined as follows: Power per unit area Intensity is measured in W m–2 Power is defined as: The rate of energy transfer Therefore, int...
IB DP Physics: SL复习笔记4.3.1 Wavefronts
Wavefronts Waves can be represented graphically in two different ways: Wavefronts - lines joining all the points that oscillate in phase and are perpendicular to the direction of motion (and energy...
IB DP Physics: SL复习笔记4.2.4 Sound Waves
Sound Waves Sound waves are longitudinal waves and, as such, require a medium in which to propagate Sound waves are generated by oscillating sources, which produce a change in density of the surrou...
IB DP Physics: SL复习笔记4.2.3 Electromagnetic Waves
Electromagnetic Waves An electromagnetic wave is generated by the combined oscillation of an electric and a magnetic field These fields oscillate perpendicular to each other and to the direction of...
IB DP Physics: SL复习笔记4.2.2 Transverse & Longitudinal Waves
Transverse & Longitudinal Waves In mechanical waves, particles oscillate about fixed points There are two types of wave: transverse and longitudinal The type of wave can be determined by the di...
美国大学毕业起薪最低的专业是什么？
众所周知，花了这么多钱出国留学，不仅要关注大学排名和专业热度，薪资和就业前景同样很重要！ 美国大学毕业起薪最低的专业是什么？最近，U.S.News参考各专业本科毕业生工作三年后的薪酬数据，又整理出了10个毕业...
IB DP Physics: SL复习笔记4.2.1 Properties of Waves
Properties of Waves Travelling waves are defined as follows: Oscillations that transfer energy from one place to another without transferring matter Energy is transferred by the waves, but matter i...
IB DP Physics: SL复习笔记4.1.4 Energy in SHM
Energy in SHM The total energy of an object oscillating with SHM is the sum of its potential energy (gravitational or elastic) and kinetic energy E = EP + EK Where: E = total energy in joules (J) E...
IB DP Physics: SL复习笔记4.1.3 SHM Graphs
SHM Graphs Displacement & Velocity The displacement-time graph for an object moving with SHM is a sinusoidal curve if: The object starts to oscillate from the equilibrium position. The equilibr...
IB DP Physics: SL复习笔记4.1.2 Simple Harmonic Oscillations
Simple Harmonic Oscillations Simple harmonic motion (SHM) is defined as follows: The motion of an object whose acceleration is directly proportional but opposite in direction to the object's displa...
2023下半年高含金量商科/经济竞赛：FBLA、NEC、IEO三大竞赛对比分析
除了工程类、数学和计算机专业，商科专业也一直位于中国留学生青睐的选择之一。商科专业的学生未来就业前景和薪资都十分有潜力，这也是其备受追捧的原因之一。 如今形形色色的商赛有很多，对于商科、经济学子来说...
