Elastic Strain Energy Work has to be done to stretch a material Before a material reaches its?elastic limit?(whilst it obeys Hooke's Law), all the work is done is stored as?elastic strain energy Th...
Tensile Stress & Strain Opposite forces can deform an object If the forces?stretch?the object, then they are tensile forces Tensile forces lead to the two properties of materials known a...
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 proporti...
A-level中文考試到底要不要考？在英國，A-level Chinese（中文）成為越來越受歡迎的一個(gè)學(xué)科。而國內(nèi)也是同樣，很多精力夠用的小伙伴，都會(huì)順便考一考A-level中文。 關(guān)于A-level 中文我們需要了解哪些？ 不是每個(gè)...
據(jù)說2022年秋季alevel考試會(huì)參考2023年CAIE新考綱樣卷？ 不知道真假，寧可信其有。來看一下經(jīng)濟(jì)樣卷選擇題部分的考點(diǎn)，該樣卷全部題目都選自過往真題，主要參考下知識(shí)點(diǎn)分布。 注意：斜體為以往不常考，下劃線為...
近年來，中國高考正在經(jīng)歷變化，讓學(xué)生擁有更大選擇范圍，目標(biāo)全面提升學(xué)生素質(zhì)。高考后咨詢A-level一年制課程的學(xué)生越來越多，雖然會(huì)比兩年制緊張，但完全可以實(shí)現(xiàn)一年后出國。也有國內(nèi)高中同學(xué)雙軌制學(xué)習(xí)，學(xué)習(xí)...
Density Density is the?mass per unit volume?of an object Objects made from low-density materials typically have a lower mass For example, a balloon is less dense than a small bar of lead des...
Kinetic & Gravitational Potential Energy Kinetic Energy Kinetic energy is the energy an object has due to its?motion?(or velocity) The faster an object is moving, the greater its kinetic...
The Principle of Conservation of Energy The Principle of Conservation of Energy states that: Energy cannot be created or destroyed, it can only be transferred from one form to another This m...
