IB DP Physics: SL复习笔记3.1.6 Phase Change
Phase Change A phase change happens whenever matter changes its state During a phase change, thermal energy is transferred to or from a substance This energy transfer does not change the temperatur...
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IB DP Physics: SL复习笔记3.1.5 Specific Latent Heat
Specific Latent Heat During a phase change (i.e. a change of state) thermal energy is transferred to a substance or removed from it, while the temperature of the substance does not change In this c...
IB DP Physics: SL复习笔记3.1.4 Specific Heat Capacity
Specific Heat Capacity The amount of thermal energy needed to change the temperature of an object depends on: The change in temperature required ΔT - i.e. the larger the change in temperature the m...
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 ...
