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1. Diode conduction temperature dependence—lab setup for voltage-temperature investigation, safety precautions, threshold voltage variation
2. Buoyancy experiment—relationship between mass and submerged depth, derivation of upthrust equation, cylindrical beaker assumptions, systematic error correction
3. Refractive index of salt solutions—density determination method, refractive index vs salt mass graph, sinθ₁ vs sinθ₂ plotting for gradient (n), uncertainty in angle measurements and refractive index
4. Electric motor efficiency—gravitational potential energy vs energy supplied, graph plotting, efficiency formula use, decreasing efficiency at higher mass, experimental consistency
5. Bungee rope stress test—breaking stress calculation from mass and diameter, comparison to manufacturer value, safety justification for small-diameter sample use in lab tests

Edexcel International AS/A Level Physics (WPH) Jan 2020

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Classification: Unit 3

Page count: 20

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Physics WPH13/01 January 2020 | Edexcel International AS Level Past Papers With Mark Scheme

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