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  • Physics Factsheet: 122. Uses of Ultrasound

    Physics Factsheet: 122. Uses of Ultrasound

    Humans can hear sound across a wide range of frequencies, typically from 20 to 20,000 Hertz (waves per second).  Younger people can usually hear even higher pitched sounds, possibly up to 22,000H...

    Price £3.00more info
  • Physics Factsheet: 123. Understanding Frictional Forces

    Physics Factsheet: 123. Understanding Frictional Forces

    Friction is a phenomenon which gives rise to forces which influence many activities in everyday life. Indeed, some activities depend on frictional forces, e.g. walking along a pavement, leaning a ladd...

    Price £3.00more info
  • Physics Factsheet: 124. Forces on Static Structures

    Physics Factsheet: 124. Forces on Static Structures

    Force is a vector.  Vectors contain two items of information, the magnitude and direction. (Scalars only contain a magnitude.) A change in either magnitude  or direction , or both, means a c...

    Price £3.00more info
  • Physics Factsheet: 125. Energy Efficiency in Power Generation

    Physics Factsheet: 125. Energy Efficiency in Power Generation

    How can we power our civilisation?  Replacing fossil fuel power stations with renewable sources of energy such as wind and solar is a possibility, but just how efficient are the different resourc...

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  • Physics Factsheet: 126. Carbon Dioxide Calculations

    Physics Factsheet: 126. Carbon Dioxide Calculations

    We are deluged with facts and figures about carbon dioxide emissions from power stations, vehicles, aircraft, etc. Usually the numbers quoted are in the region of thousands or even millions of tonnes ...

    Price £3.00more info
  • Physics Factsheet: 127. Molecules, Moles and Mass

    Physics Factsheet: 127. Molecules, Moles and Mass

    This Factsheet focuses on questions and calculations about gases....

    Price £3.00more info
  • Physics Factsheet: 128. Calculations: First Law of Thermodynamics

    Physics Factsheet: 128. Calculations: First Law of Thermodynamics

    The first law of thermodynamics can be explained by Fig 1 which  shows a frictionless cylinder and piston containing a quantity of  gas....

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  • Physics Factsheet: 129. Cathode Ray Oscilloscope

    Physics Factsheet: 129. Cathode Ray Oscilloscope

    A Cathode Ray Oscilloscope (CRO) is a useful tool for investigating alternating  potential difference.  The following points are covered in  this Factsheet:  • finding the p...

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  • Physics Factsheet: 130. Heat Engines and Heat Pumps

    Physics Factsheet: 130. Heat Engines and Heat Pumps

    A simple starting point for Thermal Physics is the fact that heat  naturally flows from a warmer object to a cooler object.  ...

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  • Physics Factsheet: 131. Refraction Calculations

    Physics Factsheet: 131. Refraction Calculations

    Examiners’ reports have drawn attention to weaknesses candidates  have displayed in calculations concerning light rays. Calculations  involving refraction caused most difficulties. T...

    Price £3.00more info
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