Gravitational Force There is a universal force of attraction between all matter with?mass This force is known as the ‘force due to gravity’ or the weight The Earth’s gravitational fie...
Concept of a Force Field A force field is any region of space where a body will experience a non-contact force This will cause the body to move, interact or be deformed in some way A ...
Evolving Models of Gas Behaviour Our knowledge and understanding of the behaviour of gases has changed significantly over time The gas laws were developed by many scientists over thousands o...
Defining Sin, Cos and Tan What is the unit circle? The unit circle is a circle with radius 1 and centre (0, 0) Angles are always measured from the positive x-axis and turn: anticlockwise?for?positi...
Brownian Motion Brownian motion of particles is the phenomenon when: Small particles (such as pollen or smoke particles) suspended in a liquid or gas are observed to move around in a random,...
Average Molecular Kinetic Energy An important property of molecules in a gas is their?average kinetic energy This can be deduced from the ideal gas equations relating pressure, volume, tempe...
Bearings What are bearings? Bearings?are a way of describing and using?directions?as?angles They are specifically defined for use in navigation because they give a precise?location?and/or?direction...
What is the sine rule? The sine rule allows us to find missing side lengths or angles in?non-right-angled triangles It states that for any triangle with angles?A, B?and?C Where a?is the side?opposi...
22fall香港留學(xué)入境最新政策有什么攻略？如果想要去到香港不隔離的同學(xué)，那么針對(duì)非香港居民在入境香港前14天沒(méi)去過(guò)香港，廣東或澳門以外的其他地區(qū)，同時(shí)沒(méi)去過(guò)“來(lái)港易計(jì)劃暫不適用的風(fēng)險(xiǎn)地區(qū)名單”內(nèi)的地方，則...
What is the Pythagorean theorem? Pythagoras’ theorem is a formula that works for?right-angled triangles?only It states that for any right-angled triangle, the?square of the hypotenuse is equal to t...
What is volume? The volume of a 3D shape is a measure of how much 3D space it takes up A 3D shape is also called a?solid You need to be able to calculate the volume of a number of common shapes How...
Kinetic Theory of Gases Equation Assumptions in Kinetic Theory Gases consist of atoms or molecules randomly moving around at high speeds The kinetic theory of gases models the thermodynamic ...
