Edexcel A Level Physics:復習筆記5.2 The Wave Equation
The Wave Equation The Wave Equation This equation links wave speed, frequency and wavelength Where: v?= velocity of the wave (m s–1) f?= frequency of the wave (Hz) λ?= wavelength (m) The wav...
Edexcel A Level Physics:復習筆記5.1 Properties of Waves
Properties of Waves Waves are generated by?oscillating sources These oscillations travel?away?from the source Oscillations can propagate through a?medium?(e.g. air, water) or in a?vac...
Edexcel A Level Physics:復習筆記4.10 Elastic Strain Energy
Area Under a Force-Extension Graph For a material which obeys Hooke's law, the elastic strain energy,?Eel?can be determined by finding the area under the force-extension graph Since this are...
Edexcel A Level Physics:復習筆記4.9 Core Practical 5: Investigating Young Modulus
Core Practical 5: Investigating Young Modulus of a Material To measure the Young Modulus of a metal in the form of a wire requires a clamped horizontal wire over a pulley (or vertical wire a...
Edexcel A Level Physics:復習筆記4.8 Stress-Strain Graphs
Stress-Strain Graphs Stress-strain curves give an indication of the properties of materials such as Up to what stress and strain they obey Hooke's Law Whether they exhibit elastic and/or pla...
Edexcel A Level Physics:復習筆記4.7 Force-Extension Graphs
Force-Extension Graphs The way a material responds to a tensile or compressive force can be shown on a force-extension, or a force-compression graph Although compression can be put into?equa...
Edexcel A Level Physics:復習筆記4.6 Stress, Strain & The Young Modulus
Stress & Strain Stress Stress is the?applied force per unit cross sectional area?of a material Forces can be; Tensile forces, which pull on an object and extend it Compressive forces, which pus...
2022加拿大初級化學奧賽JCCO報名開啟，入門化學競賽的首選！
在申請過程中，成績往往是一個門檻，擁有豐富的背景才能提升自己的核心競爭力，而背景提升里，各種國際學術活動獎項便是一把利刃。 化學學術活動則是為一些化學學習的優秀人才提供表現和學習的平臺，通過知識的碰...
2022BMO英國數學奧賽重大調整，中國學生可以直接報名參加BMO！
好消息！2022年中國學生終于可以直接參加BMO了，不需要再參加SMC了。 在2022年以前，想要參加BMO英國數學奧賽，就必須參加SMC(Senior Maths Challenge)并且取得優異成績，但是SMC不接受個人報名，只能通過注冊為U...
FBLA商賽2022報名啟動，報名組隊的同學看過來！
FBLA（Future Business Leaders of America）始于1942年，迄今為止已有超過70年歷史，由哥倫比亞大學的教授發起，是全球最大的學生職業發展組織和商業素養教育組織之一，也是美國高中影響力最大的商科賽事，堪稱...
Edexcel A Level Physics:復習筆記4.5 Hooke's Law
Hooke's Law When a force?F?is added to the bottom of a vertical metal wire of length?L, the wire?stretches A material obeys Hooke’s Law if: The extension of the material is directly proportional to...
2022-23STS再生元科學天才獎報名已開啟，還有一個月截止報名！
Regeneron Science Talent Search再生元科學天才獎(簡稱：Regeneron STS)是美國最負盛名的科學學術活動，為高中生提供了與專業科學家、國家級評審團交流自己原創性研究的機會。 該學術活動每年有來自全國各地的超...
