The First Law of Thermodynamics The First Law of Thermodynamics, which is based on the principle of conservation of energy, states: The internal energy of a system is increased when energy i...
Internal Energy Energy can be classified into two forms: kinetic or potential energy The molecules of all substances contain both kinetic and potential energies Kinetic energy is due to the ...
Resonance The frequency of forced oscillations is referred to as the driving frequency (f) or the frequency of the applied force All oscillating systems have a natural frequency (f0), this i...
Free & Forced Oscillations Free Oscillations Free oscillations occur when there is no transfer of energy to or from the surroundings This happens when an oscillating system is displaced ...
What are complex roots? A quadratic equation can either have two real roots (zeros), a repeated real root or no real roots This depends on the location of the graph of the quadratic with respect to...
Edexcel IGCSE Biology 复习笔记 2.10.7 Synapses The Role of Neurotransmitters Neurones do not actually come into direct contact with each other Where the dendrites of two neurones meet (to ma...
Damping In practice, all oscillators eventually stop oscillating Their amplitudes decrease rapidly, or gradually This happens due to resistive forces, such as friction or air resistan...
Required Practical: Investigating SHM Equipment List Resolution of measuring equipment: Stopwatch = 0.01 s Metre Ruler = 1 mm SHM in a Mass-Spring System The overall aim of this exper...
How do I write a complex number in modulus-argument (polar) form? How do I multiply complex numbers in modulus-argument (polar) form? The main benefit of writing complex numbers in modulus-argument...
