Longitudinal Waves Longitudinal Waves A longitudinal wave is one where the particles oscillate?parallel?to the; Propagation of the wave Direction of energy transfer Longitudinal waves show areas of...
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...
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...
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...
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...
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...
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...
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...
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(xué)術(shù)活動獎項便是一把利刃。 化學(xué)學(xué)術(shù)活動則是為一些化學(xué)學(xué)習(xí)的優(yōu)秀人才提供表現(xiàn)和學(xué)習(xí)的平臺，通過知識的碰...
好消息！2022年中國學(xué)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(shù)學(xué)奧賽，就必須參加SMC(Senior Maths Challenge)并且取得優(yōu)異成績，但是SMC不接受個人報名，只能通過注冊為U...
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(xué)的教授發(fā)起，是全球最大的學(xué)生職業(yè)發(fā)展組織和商業(yè)素養(yǎng)教育組織之一，也是美國高中影響力最大的商科賽事，堪稱...
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...
