AQA A Level Physics复习笔记4.3.2 Motion Graphs
Motion Graphs Gradients The gradient of a displacement-time graph is the velocity The gradient of a velocity-time graph is the acceleration Area Under the Graph The area under a velocity-time graph...
AQA A Level Physics复习笔记4.3.1 Motion Along a Straight Line
Displacement, Speed, Velocity & Acceleration Scalar quantities Scalar quantities only have a magnitude (size) Distance: the total length between two points Speed: the total distance trav...
AQA A Level Physics复习笔记4.2.3 Centre of Mass
Centre of Mass The centre of mass of an object is the point at which the weight of the object may be considered to act The position of the centre of mass of uniform regular solid is at its c...
AQA A Level Physics复习笔记4.2.2 Couples
Couples A couple is a pair of equal and opposite coplanar forces that acts to produce rotation only A couple consists of a pair of forces that are: Equal in magnitude Opposite in direction P...
AQA A Level Physics复习笔记4.2.1 Moments
What is a Moment? A moment is the turning effect of a force Moments occur when forces cause objects to rotate about some pivot The moment of a force is given by Moment (N m) = Force (N) × pe...
美本申请十大误区，你误入了吗？
现在关于留学申请的内容越来越多，但也不乏很多“误导性”观点。在多关注资讯的同时一定要避免踩坑。 十大误区 1美本规划，从11年级开始就行 很多家长，即使孩子在初中升高中时，就已经决定了出国留学。但她们仍然...
AQA A Level Physics复习笔记4.1.2 Resolving Vectors
Resolving Vectors Two vectors can be represented by a single resultant vector Resolving a vector is the opposite of adding vectors A single resultant vector can be resolved This means...
AQA A Level Physics复习笔记4.1.1 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...
AQA A Level Physics复习笔记3.5.1 Refraction at a Plane Surface
Refractive Index Refraction occurs when light passes a boundary between two different transparent media At the boundary, the rays of light undergo a change in direction The direction is take...
AQA A Level Physics复习笔记3.4.1 Single Slit Diffraction
Diffraction Diffraction is the spreading out of waves when they pass an obstruction This obstruction is typically a narrow slit known as an aperture The extent of diffraction depends ...
AQA A Level Physics复习笔记3.3.1 Path Difference & Coherence
Path Difference & Coherence Interference occurs when waves overlap and their resultant displacement is the sum of the displacement of each wave This result is based on the principle of s...
AQA A Level Physics复习笔记3.2.1 Stationary Waves
Stationary Waves Standing waves are produced by the superposition of two waves of the same frequency and amplitude travelling in opposite directions This is usually achieved by a travelling ...
