IB DP Physics: SL复习笔记4.3.2 Amplitude & Intensity
Amplitude & Intensity Intensity The?intensity?of a wave is defined as follows: Power per unit area Intensity is measured in?W m–2 Power is defined as: The rate of energy transfer Therefore, int...
IB DP Physics: SL复习笔记4.3.1 Wavefronts
Wavefronts Waves can be represented graphically in two different ways: Wavefronts?- lines joining all the points that oscillate in phase and are perpendicular to the direction of motion (and energy...
IB DP Physics: SL复习笔记4.2.4 Sound Waves
Sound Waves Sound waves are?longitudinal waves?and, as such, require a?medium?in which to propagate Sound waves are generated by oscillating sources, which produce a change in?density?of the surrou...
IB DP Physics: SL复习笔记4.2.3 Electromagnetic Waves
Electromagnetic Waves An electromagnetic wave is generated by the combined oscillation of an?electric?and a?magnetic field These fields oscillate?perpendicular?to each other and to the direction of...
IB DP Physics: SL复习笔记4.2.2 Transverse & Longitudinal Waves
Transverse & Longitudinal Waves In mechanical waves, particles?oscillate?about fixed points There are two types of wave:?transverse?and?longitudinal The type of wave can be determined by the di...
IB DP Physics: SL复习笔记4.2.1 Properties of Waves
Properties of Waves Travelling waves?are defined as follows: Oscillations that transfer energy from one place to another without transferring matter Energy is transferred by the waves, but matter i...
IB DP Physics: SL复习笔记4.1.4 Energy in SHM
Energy in SHM The?total energy?of an object oscillating with?SHM?is the?sum?of?its?potential energy?(gravitational?or?elastic) and?kinetic energy E = EP?+ EK Where: E?= total energy in joules (J) E...
IB DP Physics: SL复习笔记4.1.3 SHM Graphs
SHM Graphs Displacement & Velocity The?displacement-time graph?for an object moving with?SHM?is a?sinusoidal curve?if: The object starts to oscillate from the equilibrium position. The equilibr...
IB DP Physics: SL复习笔记4.1.2 Simple Harmonic Oscillations
Simple Harmonic Oscillations Simple harmonic motion (SHM) is defined as follows: The motion of an object whose acceleration is directly proportional but opposite in direction to the object's displa...
