IB DP Physics: SL復(fù)習(xí)筆記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...
IB DP Physics: SL復(fù)習(xí)筆記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...
英國數(shù)據(jù)科學(xué)專業(yè)可以選擇哪些高校呢？
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IB DP Physics: SL復(fù)習(xí)筆記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復(fù)習(xí)筆記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...
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IB DP Physics: SL復(fù)習(xí)筆記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復(fù)習(xí)筆記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復(fù)習(xí)筆記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復(fù)習(xí)筆記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復(fù)習(xí)筆記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復(fù)習(xí)筆記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...
