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...
Edexcel IGCSE Chemistry 复习笔记 3.3.1 Reversible Reactions Reversible Reactions Some reactions go to completion, where the reactants are used up to form the product molecules and the reacti...
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...
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...
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...
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...
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 ...
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...
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...
