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 ...
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...
The Doppler Effect When a source of sound, such as the whistle of a train or the siren of an ambulance, moves away from an observer: It appears to decrease in frequency, i.e. it sounds lower in pit...
