Potential Energy Calculations Electric Potential Energy of Two Point Charges The electric potential energy Ep?at point in an electric field is defined as: The work done in bringing a charge from in...
Potential & Potential Energy Work Done on a Mass When a mass is moved against the force of gravity, work is done The work done in moving a mass?m?is given by: Where: ?W?= change in work done (J...
Equipotential Surfaces Equipotential lines (when working in 2D) and surfaces (when working in 3D) join together points that have the same?gravitational potential These are always: Perpendicular?to ...
A-Level化學(xué)作為考試中的熱門選手，一直是同學(xué)們又愛又恨的存在：各種各樣的反應(yīng)式，專有名詞，實(shí)驗(yàn)操作實(shí)在讓人應(yīng)接不暇，然而這背后又有相對(duì)較高的A和A*率。今天就讓我們好好來看看A-Level化學(xué)到底應(yīng)該如何備考...
Gravitational & Electrostatic Potential Gravitational Potential The gravitational potential energy (G.P.E) is the energy an object has when lifted off the ground G.P.E is given by the familiar ...
Gravitational & Electrostatic Field Lines Gravitational Field Lines The direction of a gravitational field is represented by gravitational field lines The gravitational field lines around a poi...
Gravitational & Electrostatic Fields A field can be defined as A region in which an object will experience a force, such as gravitational or electrostatic, at a distance A gravitational field c...
The Doppler Equation Calculating Doppler Shift When a source of sound waves moves relative to a stationary observer, the observed frequency can be calculated using the equation below: Doppler shift...
Uses of The Doppler Effect The?Doppler effect?is important in many key areas of science including: Radar?readings for moving objects Measuring the?rate of blood flow?within a patient Finding planet...
