CIE A Level Physics复习笔记14.1.4 The Kelvin Scale
Scale of Thermodynamic Temperature As an everyday scale of temperature, Celsius (oC) is the most familiar This scale is based on the properties of water - the freezing point of water was taken as t...
CIE A Level Physics复习笔记14.1.3 Measurement of Temperature
Measurement of Temperature A thermometer is any device that is used to measure temperature Each type of thermometer uses a physical property of a material that varies with temperature - examples of...
CIE A Level Physics复习笔记14.1.2 Thermal Equilibrium
Defining Thermal Equilibrium Thermal energy is always transferred from a hotter region to lower region Thermal equilibrium is defined as: When two substances in physical contact with each other no ...
CIE A Level Physics复习笔记14.1.1 Thermal Energy Transfer
Thermal Energy Transfer The conservation of energy states that energy is never created or destroyed, only transferred from one form to another When a thermometer is placed in a beaker of boiling wa...
CIE A Level Physics复习笔记13.2.2 Gravitational Potential Energy
Gravitational Potential Energy Between Two Point Masses The gravitational potential energy (G.P.E) at point in a gravitational field is defined as: The work done in bringing a mass from infinity to...
CIE A Level Physics复习笔记13.2.1 Gravitational Potential
Gravitational Potential The gravitational potential energy (G.P.E) is the energy an object has when lifted off the ground given by the familiar equation: G.P.E = mgΔh The G.P.E on the surface of th...
CIE A Level Physics复习笔记13.1.6 The Value of g on Earth
The Value of g on Earth Gravitational field strength g is approximately constant for small changes in height near the Earth’s surface (9.81 m s-2) This is because from the inverse square law relati...
CIE A Level Physics复习笔记13.1.5 Gravitational Field Strength
Deriving Gravitational Field Strength (g) The gravitational field strength at a point describes how strong or weak a gravitational field is at that point The gravitational field strength due to a p...
CIE A Level Physics复习笔记13.1.4 Geostationary Orbits
Geostationary Orbits Many communication satellites around Earth follow a geostationary orbit This is a specific type of orbit in which the satellite: Remains directly above the equator, therefore, ...
