美本申请Commom App开放，美本申请怎么准备？
8月1日，2022-2023年美本申请Commom App平台将按承诺开放注册，这意味着美国大学申请正式开始，大部分学生将在未来一段时间内经历提前申请，UC申请、常规申请等阶段，直到收获梦想学校Offer。在这段时间里，我们...
IB DP Physics: HL复习笔记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: HL复习笔记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: HL复习笔记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: HL复习笔记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 ...
IB DP Physics: HL复习笔记5.4.1 Magnetic Fields
Magnetic Fields Magnetic Field Definition A magnetic field is a field of force that is created either by: Moving electric charge Permanent magnets Permanent magnets are materials that produce a mag...
IB DP Physics: HL复习笔记5.3.4 Electromotive Force & Internal Resistance
Electromotive Force When charge passes through a power supply such as a battery, it gains electrical energy The electromotive force (e.m.f) is the amount of chemical energy converted to electrical ...
IB DP Physics: HL复习笔记5.3.3 Terminal Potential Difference
Terminal Potential Difference Defining Potential Difference A cell makes one end of the circuit positive and the other negative. This sets up a potential difference V across the circuit The potenti...
IB DP Physics: HL复习笔记5.3.2 Investigating Electric Cells
Investigating Electric Cells Zinc-carbon cells Zinc-carbon cells are the most common type of primary cells, consisting of a zinc casing which acts as the negative electrode a paste of ammonium chlo...
