Edexcel IGCSE Biology 复习笔记 1.1.2 Diffusion & Dilution
Edexcel IGCSE Biology 复习笔记 1.1.2 Diffusion & Dilution Diffusion & Dilution Diffusion and dilution experiments support a theory that all matter (solids, liquids and gases) is made...
Edexcel IGCSE Biology 复习笔记 1.1.2 Diffusion & Dilution Diffusion & Dilution Diffusion and dilution experiments support a theory that all matter (solids, liquids and gases) is made...
Modelling with Trigonometric Functions What can be modelled with trigonometric functions? Anything that oscillates (fluctuates periodically) can be modelled using a trigonometric function Normally ...
Edexcel IGCSE Chemistry 复习笔记 1.1.1 The Three States of Matter The Three States of Matter The three states of matter are solids, liquids and gases A substance can usually exist in all thr...
Work Done on a Mass When a mass is moved against the force of gravity, work is done The work done in moving a mass m is given by: ∆W = m∆V Where: ∆W = change in work done (J) m = mass (kg) ∆...
Transformations of Trigonometric Functions What transformations of trigonometric functions do I need to know? As with other graphs of functions, trigonometric graphs can be transformed through tran...
Graphical Representation of Gravitational Potential Gravitational field strength, gand the gravitational potential,V can be graphically represented against the distance from the centre of a ...
Calculating Gravitational Potential The equation for gravitational potential V is defined by the mass M and distance r: Where: V = gravitational potential (J kg-1) G = Newton’s gravitational...
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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 surfac...
Graphs of Trigonometric Functions What are the graphs of trigonometric functions? The trigonometric functions sin, cos and tan all have special periodic graphs You’ll need to know their properties ...
Gravitational Field Strength in a Radial Field The gravitational field strength, g at a point describes how strong or weak a gravitational field is at that point g in a radial field (such as...
Newton's Law of Gravitation The gravitational force between two bodies outside a uniform field, e.g. between the Earth and the Sun, is defined by Newton’s Law of Gravitation Recall that the ...
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