IB DP Physics: SL复习笔记3.1.3 Internal Energy
Internal Energy When a substance gains or loses thermal energy, its?internal energy?increases or decreases The internal energy of a substance is defined as: The sum of the total kinetic energy and ...
IB DP Physics: SL复习笔记3.1.2 Temperature
Temperature Temperature?is a measure of how hot or cold objects are Temperature also determines the direction in which thermal energy will flow between two objects (or between an object and its sur...
IB DP Physics: SL复习笔记3.1.1 Solids, Liquids & Gases
Solids, Liquids & Gases The three states of matter are?solid,?liquid?and?gas The?kinetic theory of matter?is a model that attempts to explain the properties of the three states of matter In thi...
IB DP Physics: SL复习笔记2.4.4 Collisions & Explosions
Collisions & Explosions In both collisions and explosions,?momentum is always conserved However,?kinetic energy?might not always be A collision (or explosion) is either: Elastic?– if the kineti...
IB DP Physics: SL复习笔记2.4.3 Conservation of Linear Momentum
Conservation of Linear Momentum The principle of conservation of linear momentum states: The total momentum before a collision = the total momentum after a collision provided no external force acts...
IB DP Physics: SL复习笔记2.4.2 Impulse
Impulse The force and momentum equation can be rearranged to find the impulse Impulse,?I, is equal to the?change in momentum: I?=?FΔt?= Δp?=?mv?–?mu Where: I =?impulse (N s) F?= force (N) t =?time ...
IB DP Physics: SL复习笔记2.4.1 Force & Momentum
Force & Momentum Linear momentum,?p, is defined as the product of mass and velocity Momentum is a?vector?quantity - it has both a?magnitude?and a?direction This means it can have a negative or ...
IB DP Physics: SL复习笔记2.3.7 Efficiency
Efficiency The efficiency of a system is a measure of how well energy is transferred in a system Efficiency is defined as: The ratio of the useful power or energy transfer output from a system to i...
IB DP Physics: SL复习笔记2.3.6 Principle of Conservation of Energy
Principle of Conservation of Energy The Principle of Conservation of Energy states that: Energy cannot be created or destroyed, it can only be transferred from one form to another This means the to...
