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Class IX-Science-Title 9 (1 DVD Pack)

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Work and Energy Sound
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Physics
Work and Energy
Sound

  • Work and Energy 
  • Positive and Negative Work Done with Example
  • Energy
  • Different forms of Energy
  • Kinetic Energy
  • Potential Energy
  • Potential Energy of an Object at Height
  • Law of Conservation of Energy
  • Justification of Law of Conservation of Energy
  • Power
  • Relation between Commercial and S.I. unit of Energy and Examples
  • Example
  • Sound – Periodic Motion
  • Wave
  • Wave and its Motion
  • Basic concepts of Wave and its Motion
  • Propagation of Sound Wave in Medium
  • Pitch and Loudness
  • Quality of Wave and Relation between Wave - Velocity
  • Speed of Sound in Different Medium
  • Reverberation
  • Application of Ultrasound
  • Structure of Human Ear
  • Examples
 

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