IB DP Physics: SL復習筆記6.2.2 Circular Orbits
Circular Orbits Since most planets and satellites have a near circular orbit, the gravitational force?FG?between the sun or another planet provides the?centripetal force?needed to stay in an orbit ...
2022年7月31日托福考試考情回顧！
7月31日的托福考試雖然整體難度還不算高，但很明顯比之前兩次托福考試難度要高一些，不僅口語出現了全新話題，寫作也出現了新題目，讓考生分手難題提升不少。8月份是暑假最后出分的機會，考場相對少一些，考試次...
AP美國史考察內容解讀，應該如何備考？
相信很多中國學生對AP美國歷史并不是很感興趣，認為枯燥且難，學了也拿不上高分。但其實，作為一門“偏文”的AP科目，學好AP美國歷史不僅能展示出學生的學術能力，還可體現出申請者是一個敢于挑戰，全面發展的學生...
IB DP Physics: SL復習筆記6.2.1 Newton’s Law of Gravitation
Newton's Law of Gravitation The gravitational force between two bodies outside a uniform field, e.g. between the Earth and the Sun, is defined by Newton’s Law of Gravitation Recall that the mass of...
IB DP Physics: SL復習筆記6.1.4 Applications of Circular Motion
Applications of Circular Motion Horizontal Circular Motion An example of horizontal circular motion is a vehicle driving on a curved road The forces acting on the vehicle are: The?friction?between ...
IB DP Physics: SL復習筆記6.1.3 Centripetal Acceleration
Centripetal Acceleration For an object moving in a circle: The acceleration is towards the centre of the circle The magnitude of the centripetal acceleration?a?is: Where: a =?centripetal accelerati...
2023美本申請季綜合性大學標化政策要求盤點！
2023Fall申請季開始了，美國大學的標準化成績的政策根據情況進行了調整。有的延續2022年的政策，而有的對標準化成績進行了嚴格的要求。一般有以下四種類型：Test-Required：必須提交SAT/ACT分數，否則申請材料并...
IB DP Physics: SL復習筆記6.1.2 Centripetal Force
Centripetal Force An object moving in a circle is not in equilibrium, it has a resultant force acting upon it This is known as the?centripetal force?and is what keeps the object moving in a circle ...
IB DP Physics: SL復習筆記6.1.1 Circular Motion
Properties of Circular Motion For an object moving in a circle, it will have the following properties: Period Frequency Angular displacement Angular velocity These properties can be inferred from t...
IB DP Physics: SL復習筆記5.4.4 Solving Problems Involving Magnetic Forces
Solving Problems Involving Magnetic Forces There is a lot of mathematics surrounding magnetism and magnetic forces The key equations are: Force on a current-carrying conductor: F = BIL Force on a m...
IB DP Physics: SL復習筆記5.4.3 Magnetic Force on a Current-Carrying Conductor
Magnetic Force on a Current-Carrying Conductor A current-carrying conductor produces its own?magnetic field When interacting with an external magnetic field, it will experience a?force A current-ca...
IB DP Physics: SL復習筆記5.4.2 Magnetic Force on a Charge
Magnetic Force on a Charge Calculating Magnetic Force on a Moving Charge The magnetic force on an isolating moving charge, such an electron, is given by the equation: F = BQv sinθ Where: F = force ...
