CIE A Level Physics復習筆記7.1.3 The Wave Equation
Derivation of v = f λ Using the definitions of speed, frequency and wavelength, the wave equation?v?=?fλ?can be derived This is an important relationship between three key properties of a wave The ...
CIE A Level Physics復習筆記7.1.2 Cathode-Ray Oscilloscope
Cathode-Ray Oscilloscope A Cathode-Ray Oscilloscope is a laboratory instrument used to display, measure and analyse waveforms of electrical circuits An A.C. current on an oscilloscope is represente...
CIE A Level Physics復習筆記7.1.1 Progressive Waves
Wave Motion Energy is transferred through moving?oscillations?or?vibrations. These can be seen in vibrations of ropes or springs Waves can be shown through vibrations in ropes or springs The oscill...
CIE A Level Physics復習筆記6.2.2 Elastic Potential Energy
Area under a Force-Extension Graph The work done in stretching a material is equal to the force multiplied by the distance moved Therefore, the?area under a force-extension graph is equal to the wo...
CIE A Level Physics復習筆記6.2.1 Elastic & Plastic Behaviour
Elastic & Plastic Deformation Elastic deformation:?when the load is removed, the object?will?return to its original shape Plastic deformation:?when the load is removed, the object?will?not?retu...
CIE A Level Physics復習筆記6.1.3 The Young Modulus
Stress, Strain & the Young Modulus Stress Tensile stress is the?applied force per unit cross sectional area?of a material Stress equation The?ultimate tensile stress?is the?maximum?force per or...
CIE A Level Physics復習筆記6.1.2 Hooke's Law
Hooke's Law A material obeys Hooke’s Law if?its extension is directly proportional to the applied force (load) The Force v Extension graph is a straight line through the origin (see “Extension and ...
CIE A Level Physics復習筆記6.1.1 Extension & Compression
Tensile Force Forces don’t just change the motion of a body, but can change the size and?shape?of them too. This is known as?deformation Forces in opposite directions stretch or compress a body Whe...
CIE A Level Physics復習筆記5.2.2 Kinetic Energy
Derivation of KE = 1/2mv2 Kinetic energy is energy an object has due to its?motion?(or velocity) A force can make an object accelerate; work is done by the force and energy is transferred to the ob...
