Physics 9702 a2 level Study guides, Class notes & Summaries

Physics 9702 A2 Level Questions & answers

Absolute Zero - correct answer-The theoretical temperature at which the molecules of a substance have the lowest energy and hence the substance has minimum internal energy and no kinetic energy acoustic impedance - correct answer-product of density of medium and speed of sound in medium Activity - correct answer-The number of atoms of a radioactive substance that decay per unit time. amplitude modulation - correct answer-amplitude of carrier wave varies in synchrony with the displacement...

Physics 9702 A2 Level Definitions

Alternating current equation - ANSWER-I = I0 sin ωt Define the rms value of an alternating current - ANSWER-equal to the steady direct current which converts electrical energy to other forms of energy at the same rate and conditions Irms = ? - ANSWER-I0/√2 Transformer equation - ANSWER-Vs/Vp = Ns/Np = Ip/Is Power loss equation - ANSWER-Ploss = I2R Types of rectification - ANSWER-Half-wave and Full-wave Define capacitance - ANSWER-charge stored per unit potential difference ...

Alternating current equation - answer-I = I0 sin ωt Define the rms value of an alternating current - answer-equal to the steady direct curent which converts electrical energy to other forms of energy at the same rate and conditions Irms = ? - answer-I0/√2 Transformer equation - answer-Vs/Vp = Ns/Np = Ip/Is Power loss equation - answer-Ploss = I2R Types of rectification - answer-Half-wave and Full-wave Define capacitance - answer-charge stored per unit potential difference ...

1. Motion in a Circle 1.1. Radians Radian: one radian is the angle subtended at the center of the circle by an arc of length equal to the radius of the circle Angular displacement: the angle through which an object moves through a circle Hence 1 revolution is 0.1sec Use angular velocity formula 2π ω = 0.1 = 62.8 Using relation between angular and linear velocity v = ωr = 62.8 × 0.2 = 12.6 ms-1 1.3. Circular Motion s = rθ

CIE A'level Physics 9702 A2: Medical Physics Explain the main principles behind the GENERATION of ULTRASOUND to obtain diagnostic information about internal structure. - ~ Use piezo-electric crystal ~ two sides coated with silver act as electrodes ~ centres of (+) & (-) charge do not coincident. ~ p.d. across crystal causes crystal to change shape ~ alternating voltage applied across crystal causes crystal to vibrate. ~ so that it vibrates at resonant frequency Ultrasound to obtain dia...

These are the full revision notes which cover all topics required for the (CAIE ) Cambridge AS and A Level Physics exam. They cover all the theory parts required by the syllabus for the AS Paper 1 (Multiple Choice) and AS Paper 2 (AS Structure Questions) and A2 Paper 4 (AL Structure Questions). The syllabus code is 9702. Please try these notes and good luck with your exams! I recommend them as I got A* in my full A level Physics. If you have any doubts don't hesitate in contacting me! It woul...

Contains all equations, definitions, concepts and explanations, proofs required for Paper 4 for the Cambridge International A Levels Physics. Made by an A* student.