IB DP Physics: HL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 su...
IB DP Physics: HL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, in...
IB DP Physics: HL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: HL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: HL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: HL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...
IB DP Physics: HL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: HL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...
高含金量的学术挑战nec全美经济挑战赛辅导！
高含金量的学术挑战，帮助申请名校，即将到来的全球中学生·NEC全美经济挑战辅导，商科学子加油冲。 关于NEC全美经济挑战 活动简介 NEC全美经济挑战(NationalEconomicsChallenge)由美国经济学教育学会主办，是美国...
2022留学生就业竞争力洞察报告！QS百强院校毕业生更受欢迎！
更多国际赛事干货/真题、藤校学霸故事，关注【翰林课程】公众号！ 2022年，我国高校毕业生首次突破1000万。而在疫情影响下，有越来越多的留学生选择回国工作，2021年归国创新创业留学生人数首破100万。 对于各位...
哥伦比亚大学官方推荐！这6本书伴你度过充实假期~
更多国际赛事干货/真题、藤校学霸故事，关注【翰林课程】公众号！ 正值暑假期间，也是同学们静心阅读的好机会。此前，我们已经给大家分享了普林斯顿、哈佛、MIT、斯坦福的夏日书单，点击对应学校名字可查看详情。...
8门AP满分，斩获宾大、帝国理工等8枚offer！全能学霸是如何练成的？
斩获宾大、帝国理工等8枚offer 这位全能学霸虽然“文理通吃” 但也曾有过“专业选择困难”期 想知道全能学霸是如何选择专业的吗 想知道TA的申请之路有何与众不同吗？ 想知道托福118，SAT1570是如何练成的吗？ 快来今...
