AQA A Level Physics复习笔记6.6.4 Brownian Motion
Brownian Motion Brownian motion of particles is the phenomenon when: Small particles (such as pollen or smoke particles) suspended in a liquid or gas are observed to move around in a random,...
AQA A Level Physics复习笔记6.6.3 Average Molecular Kinetic Energy
Average Molecular Kinetic Energy An important property of molecules in a gas is their average kinetic energy This can be deduced from the ideal gas equations relating pressure, volume, tempe...
IB DP Maths: AA HL复习笔记3.3.3 Applications of Trigonometry & Pythagoras
Bearings What are bearings? Bearings are a way of describing and using directions as angles They are specifically defined for use in navigation because they give a precise location and/or direction...
IB DP Maths: AA HL复习笔记3.3.2 Non Right-Angled Trigonometry
What is the sine rule? The sine rule allows us to find missing side lengths or angles in non-right-angled triangles It states that for any triangle with angles A, B and C Where a is the side opposi...
IB DP Maths: AA HL复习笔记3.3.1 Pythagoras & Right-Angled Triganometry
What is the Pythagorean theorem? Pythagoras’ theorem is a formula that works for right-angled triangles only It states that for any right-angled triangle, the square of the hypotenuse is equal to t...
IB DP Maths: AA HL复习笔记3.2.2 Volume & Surface Area
What is volume? The volume of a 3D shape is a measure of how much 3D space it takes up A 3D shape is also called a solid You need to be able to calculate the volume of a number of common shapes How...
AQA A Level Physics复习笔记6.6.2 Kinetic Theory of Gases Equation
Kinetic Theory of Gases Equation Assumptions in Kinetic Theory Gases consist of atoms or molecules randomly moving around at high speeds The kinetic theory of gases models the thermodynamic ...
IB DP Maths: AA HL复习笔记3.2.1 3D Coordinate Geometry
How does the 3D coordinate system work? In three-dimensional space we can label where any object is using the x-y-z coordinate system In the 3D cartesian system, the x- and y- axes usually represen...
AQA A Level Physics复习笔记6.6.1 Gas Laws v Kinetic Theory
Gas Laws v Kinetic Theory There is a scientific distinction between the gas laws and kinetic theory Gas Laws The gas laws are empirical in nature which means they are based on observation an...
