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...
Regeneron Science Talent Search再生元科學(xué)天才獎(jiǎng)(簡稱：Regeneron STS)是美國最負(fù)盛名的科學(xué)學(xué)術(shù)活動(dòng)，為高中生提供了與專業(yè)科學(xué)家、國家級評審團(tuán)交流自己原創(chuàng)性研究的機(jī)會(huì)。 該學(xué)術(shù)活動(dòng)每年有來自全國各地的超...
AP化學(xué)其實(shí)說難也不難，說簡單也不簡單，因?yàn)榛瘜W(xué)知識點(diǎn)又多又雜，太煩啦！而且AP化學(xué)5分率低，導(dǎo)致有不少同學(xué)不太敢選化學(xué)……但是對于打算申請生物化學(xué)、物理、環(huán)境科學(xué)相關(guān)專業(yè)，或者想提升課程難度、證明個(gè)人能...
在許多AP科目中，化學(xué)的五分率一直不高，AP化學(xué)5分容錯(cuò)率為25%左右，作為大部分理、工科學(xué)生必修的一門課程，是很多同學(xué)報(bào)考的科目。AP化學(xué)考試內(nèi)容有哪些？2023年AP課程考試報(bào)名開啟！尤其是社會(huì)考生！ AP化學(xué)課...
Core Practical 4: Investigating Viscosity of a Liquid Aim of the Experiment By allowing small spherical objects of known weight to fall through a fluid until they reach terminal velocity, the?visco...
Stoke's Law Viscous Drag Viscous drag is defined as the frictional force between an object and a?fluid?which opposes the the motion between the object and the fluid Viscous drag is calculated using...
Scholastic Art & Writing Awards?藝術(shù)與寫作獎(jiǎng)，是全美規(guī)模最大、歷史最悠久、聲譽(yù)最高的藝術(shù)和文學(xué)學(xué)術(shù)活動(dòng)，旨在尋找7-12年級學(xué)生的創(chuàng)意性作品。自1923年創(chuàng)辦以來，藝術(shù)與寫作獎(jiǎng)為青少年提供了展示創(chuàng)意和...
Upthrust Archimedes' Principle Archimedes’ principle states: An object submerged in a fluid at rest has an upward buoyancy force (upthrust) equal to the weight of the fluid displaced by the object ...
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...
