Discovering "class-8 - content"
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Friction Part-9 Increasing & Reducing Friction
Free
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Friction Part-10 Rolling Friction Ball bearing
Free
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Friction Part-11 Fluid Friction
Free
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Friction Part-12 Friction Questions Part-12
Free
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Sound Part-1 Introduction
Free
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Sound Part-2 What produces Sound
Free
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Sound Part-3 Vibration
Free
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Sound Part-4 Musical Instruments
Free
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Sound Part-5 Sound by Humans: Larynx
Free
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Sound Part-6 Medium of Sound Propagation
Free