Core Practical 9: Investigating Impulse Aims of the Experiment To determine the change in momentum of a trolley due to a force acting on it This is known as the impulse Variables Independent variab...
Impulse Force is defined as the?rate of change of momentum?on a body The change in momentum is defined as the final momentum minus the initial momentum These can be expressed as follows: Def...
Atomic Line Spectra An emission line spectrum is produced when: An excited electron in an atom moves from a higher to a lower energy level and emits a photon with an energy corresponding to the dif...
The Particle Nature of EM Radiation The Particle Nature of Light In classical wave theory, electromagnetic (EM) radiation is assumed to behave as a wave This is demonstrated by the fact EM radiatio...
The Electronvolt The electronvolt is a unit which is commonly used to express very small energies This is because quantum energies tend to be much smaller than 1 Joule The electronvolt is derived f...
The Photoelectric Equation Since energy is always conserved, the energy of an incident photon is equal to: The work function?+?the maximum kinetic energy of the photoelectron The energy within a ph...
The Photoelectric Effect The?photoelectric effect?is the phenomena in which electrons are emitted from the surface of a metal?upon the absorption of electromagnetic radiation Electrons removed from...
和體制內(nèi)一樣，英國(guó)教育部也會(huì)在“黃金九十月”發(fā)布GCSE最新考試政策，各大考試局會(huì)根據(jù)教育部的相關(guān)政策，做出相應(yīng)回復(fù)，修改考試大綱，增減主題內(nèi)容。 英國(guó)教育部和考試監(jiān)管機(jī)構(gòu)Ofqual官宣2022年秋季及2023年夏季...
Energy of a Photon Photons are fundamental particles which make up all forms of electromagnetic radiation A photon is a massless “packet” or a “quantum” of electromagnetic energy What this means is...
