美國留學(xué)專業(yè)選擇方法
多數(shù)人，留學(xué)為了學(xué)習(xí)更專業(yè)的知識、國際化的視野，更好的職場發(fā)展。其中，留學(xué)專業(yè)的選擇在一定程度上決定了你的選校范圍，甚至是畢業(yè)以后你的職業(yè)選擇范圍。那么，留學(xué)美國專業(yè)選什么好？怎么選？ 美國留學(xué)特點...
CIE A Level Physics復(fù)習(xí)筆記11.2.2 Quark Composition
Quark Composition: Protons & Neutrons Protons and neutrons are?not?fundamental particles. They are each made up of three quarks Protons?are made up of?two up quarks and a down quark Neutrons?ar...
CIE A Level Physics復(fù)習(xí)筆記11.2.1 Fundamental Particles
Fundamental Particles: Quarks Quarks are?fundamental particles?that make up other subatomic particles such as?protons and neutrons Protons and neutrons are in a category of particles called?hadrons...
CIE A Level Physics復(fù)習(xí)筆記11.1.4 Decay Equations
Neutrino Emission An electron neutrino is a type of subatomic particle with no charge and negligible mass which is also emitted from the nucleus The anti-neutrino is the antiparticle of a neutrino ...
CIE A Level Physics復(fù)習(xí)筆記11.1.3 Alpha, Beta & Gamma Particles
Alpha, Beta & Gamma Particles Some elements have nuclei that are unstable This tends to be when the number of nucleons does not balance In order to become more stable, they emit particles and/o...
CIE A Level Physics復(fù)習(xí)筆記11.1.2 Nucleon & Proton Number
Nucleon & Proton Number The atomic symbol of an element is used to describe the constituents of the nuclei An example of this notation for Lithium is: Atomic symbol for Lithium When given an at...
CIE A Level Physics復(fù)習(xí)筆記11.1.1 Atomic Structure
Rutherford Scattering Evidence for the structure of the atom was discovered by Ernest Rutherford in the beginning of the 20th century from the study of?α-particle scattering The experimental setup ...
CIE A Level Physics復(fù)習(xí)筆記10.2.2 Potential Divider Components
The Potentiometer A potentiometer is similar to a variable resistor connected as a potential divider to give a continuously variable output voltage It can be used as a means of comparing potential ...
CIE A Level Physics復(fù)習(xí)筆記10.2.1 Potential Dividers
Potential Divider Circuit When two resistors are connected in series, through Kirchhoff’s Second Law, the potential difference across the power source is divided between them Potential dividers are...
CIE A Level Physics復(fù)習(xí)筆記10.1.8 Resistors in Parallel
Deriving the Equation for Resistors in Parallel In a parallel circuit, the reciprocal of the combined resistance of two or more resistors is the sum of the reciprocal of the individual resistances ...
CIE A Level Physics復(fù)習(xí)筆記10.1.7 Resistors in Series
Deriving the Equation for Resistors in Series In a series circuit, the combined resistance of two or more resistors is the sum of the individual resistances In a series circuit: The current is the ...
CIE A Level Physics復(fù)習(xí)筆記10.1.6 Solving Problems with Kirchhoff's Laws
Solving Problems with Kirchhoff's Laws Kirchhoff’s laws can be used to solve simple circuit problems Worked Example For the circuit below, state the readings of ammeters A1, A2? and A3. Worked Exam...
