Edexcel A Level Physics:复习笔记5.1 Properties of Waves
Properties of Waves Waves are generated by?oscillating sources These oscillations travel?away?from the source Oscillations can propagate through a?medium?(e.g. air, water) or in a?vac...
Edexcel A Level Physics:复习笔记4.10 Elastic Strain Energy
Area Under a Force-Extension Graph For a material which obeys Hooke's law, the elastic strain energy,?Eel?can be determined by finding the area under the force-extension graph Since this are...
Edexcel A Level Physics:复习笔记4.9 Core Practical 5: Investigating Young Modulus
Core Practical 5: Investigating Young Modulus of a Material To measure the Young Modulus of a metal in the form of a wire requires a clamped horizontal wire over a pulley (or vertical wire a...
Edexcel A Level Physics:复习笔记4.8 Stress-Strain Graphs
Stress-Strain Graphs Stress-strain curves give an indication of the properties of materials such as Up to what stress and strain they obey Hooke's Law Whether they exhibit elastic and/or pla...
Edexcel A Level Physics:复习笔记4.7 Force-Extension Graphs
Force-Extension Graphs The way a material responds to a tensile or compressive force can be shown on a force-extension, or a force-compression graph Although compression can be put into?equa...
Edexcel A Level Physics:复习笔记4.6 Stress, Strain & The Young Modulus
Stress & Strain Stress Stress is the?applied force per unit cross sectional area?of a material Forces can be; Tensile forces, which pull on an object and extend it Compressive forces, which pus...
Edexcel A Level Physics:复习笔记4.5 Hooke's Law
Hooke's Law When a force?F?is added to the bottom of a vertical metal wire of length?L, the wire?stretches A material obeys Hooke’s Law if: The extension of the material is directly proportional to...
Edexcel A Level Physics:复习笔记4.4 Core Practical 4: Investigating Viscosity
Core Practical 4: Investigating Viscosity of a Liquid Aim of the Experiment By allowing small spherical objects of known weight to fall through a fluid until they reach terminal velocity, the?visco...
Edexcel A Level Physics:复习笔记4.3 Viscous Drag
Stoke's Law Viscous Drag Viscous drag is defined as the frictional force between an object and a?fluid?which opposes the the motion between the object and the fluid Viscous drag is calculated using...
