Physics Spm

SPM Physics 2009. Speed Velocity Newton’s First Law of Motion (Inertia) Momentum Conservation of momentum Balanced force

Unbalanced force Newton’s Second Law of Motion Impulsive force Impulse Equilibrium force Work Conservation of energy Hooke’s Law Pressure Pascal’s Principle Archimedes Principle Bernoulli’s Principle Thermal equilibrium Specific heat capacity Boyle’s Law Charles’ Law Pressure Law Damping Reflection of wave Refraction of wave

Diffraction of wave Coherent wave Interference Sound wave Electromagnetic spectrum Ohm’s Law Circuits Iman’s Property 2009

Distance / Time taken Displacement / Time taken Object will remain moving / rest unless acted by unbalance fore Product of mass and velocity. mv If there’s a collision, initial momentum = final momentum Do not affect an object’s motion. Eg, Engine speed up the car, air resistance slow down the car. But the force is balance. Therefore, car move in constant speed & direction. Affect an object’s motion. Acceleration directly proportional to net force but inversely proportional to mass. F=ma Rate of change of momentum Change in momentum Zero net force Product of applied force and displacement. W=Fs Energy can transform from one kind to another Force applied to a spring is directly proportional to spring extension Force / Area Force applied = force produced . FA=FA Buoyant force = Fluid displaced by object When speed increase, pressure decrease No net heat flow Amount of heat needed to change temperature of 1 kg by 1 K Pressure increase, volume decrease (inversely proportional) PV Volume increase, temperature increase (directly proportional) V/T Pressure increase, temperature increase (directly proportional) P/T Oscillating system that loses energy to the surrounding Constant frequency, wavelength, speed Constant frequency. Change wavelength and speed. *in deep area, longer wavelength and less speed Constant frequency, wavelength, speed. Only direction of propagation changed. Same wavelength, frequency Two wave meets AmpLitude – Louder Frequency – Pitch Range of low frequency to high frequency Current is directly proportional to potential difference Series Circuit Parallel Circuit

Electromotive force (V) Electromagnet

Induced current Lenz’s Law Faraday’s Law Direct current Alternating current Thermionic emission Doping Rectification Capacitor Transistor Logic gate Nucleon number Isotopes Radioactivity Radioisotopes Nuclear fission Nuclear fusion

Iman’s Property 2009

I=I=I I=I+I V=V+V V=V=V R=R+R 1/R=1/R+1/R Work done by cell Magnet made by winding a coil round a soft iron core. Magnetic force is produced when current passed thru the coil. When a wire cuts magnetic flux Direction of induced current will opposed Magnitude of induced current is directly proportional to the rate of cutting the magnetic flux Current which flow in one direction Current that flows to and fro in two opposite direction Emission of electron when a metal surface is heated Adding impurities to semiconductor to increase their conductivity Using diode to convert alternating current into direct current To maintain a steady output voltage. (smoothing the capacitor) Amplify small current Digital circuit that design to make decision Total proton & neutrons. Known as mass number. Same proton, different nucleon Natural disintegration of unstable nucleus Unstable isotopes that give out radioactivity emissions Splitting a heavy nucleus into two lighter nuclei Combining of two lighter nuclei to form heavier nucleus