2022年美國數學競賽AMC報名即將截止！為什么一定要參加美國AMC？
近幾年來，美本競爭不斷白熱化，SAT/ACT、托福、GPA這些標化成績已經很難讓同學們在龐大的留學生群體中脫穎而出。這個時候，就需要一些活動學術活動來幫助同學們提升“軟背景”，提高申請競爭力。今天要介紹的美國A...
Edexcel A Level Physics:復習筆記2.14 Conservation of Linear Momentum
The Principle of Conservation of Linear Momentum The principle of conservation of momentum states that in a?closed system, the total momentum before an event is equal to the total momentum after th...
Edexcel A Level Physics:復習筆記2.13 Momentum
Defining Momentum Linear momentum (p) is defined as the product of mass and velocity Momentum is the product of mass and velocity Momentum is a vector quantity - it has both a magnitu...
Edexcel A Level Physics:復習筆記2.12 Newton's Third Law of Motion
Newton's Third Law of Motion Newton’s?third law of motion?states: Whenever two bodies interact, the forces they exert on each other are equal in size, act in opposite directions, and are of the sam...
Edexcel A Level Physics:復習筆記2.11 Core Practical 1: Investigating the Acceleration of Freefall
Acceleration of Freefall Using Electromagnets & Light Gates Aim of the Investigations The overall aim of these investigations is to calculate the value of the acceleration due to gravity,?g The...
Edexcel A Level Physics:復習筆記2.10 Mass, Weight & Gravitational Field Strength
Mass, Weight & Gravitational Field Strength Mass Mass?is the measure of the amount of matter in an object Consequently, this is the property of an object that resists change in motion The great...
Edexcel A Level Physics:復習筆記2.9 Force & Acceleration
Newton's First Law of Motion Newton's First Law states: A body will remain at rest or move with constant velocity unless acted on by a resultant force The law is used to explain why things move wit...
Edexcel A Level Physics:復習筆記2.8 Forces as Vectors
Free-body Force Diagrams Free body diagrams are useful for modeling the forces that are acting on an object Each force is represented as a?vector?arrow, where each arrow: Is scaled to the?magnitude...
Edexcel A Level Physics:復習筆記2.7 Projectiles
Components of Velocity The trajectory of an object undergoing projectile motion consists of a?vertical?component and a?horizontal?component These need to be evaluated separately Some key ter...
Edexcel A Level Physics:復習筆記2.6 Finding the Resultant Vector
Adding Vectors Vectors can be combined by?adding?or?subtracting?them to produce the resultant vector The resultant vector is sometimes known as the ‘net’ vector (eg. the net force) There are...
Edexcel A Level Physics:復習筆記2.5 Resolving Vectors
Resolving Vectors Vectors?are represented by an arrow The?arrowhead?indicates the?direction?of the vector The?length?of the arrow represents the?magnitude Component?vectors are sometimes drawn with...
Edexcel A Level Physics:復習筆記2.4 Scalars & Vectors
Scalars & Vectors A?scalar?is a?quantity?which?only?has a magnitude (size) A?vector?is a quantity which has?both?a magnitude and a direction For example, if a person goes on a hike in th...
