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Here are some important Paper 1 derivations for A level Physics.
Disclaimer: please check with your exam board and specification/syllabus as this is not an exhaustive list, just a guideline
Chapters:
00:00 Kinetic Energy OCR, AQA, Edexcel
02:00 GPE OCR, AQA, Edexcel
02:56 P=Fv OCR, AQA, Edexcel
03:26 F=ma and momentum OCR
04:07 OCR 3/2kT
05:10 Kepler's 3rd Law OCR
06:21 Escape Velocity OCR
06:59 Speed of a satellite
07:44 Total Energy of a satellite
08:54 Age of the Universe OCR
09:32 Parsec Derivation
11:10 Young's Double Slit AQA
15:16 Diffraction Grating Equation AQA
17:35 Kinetic Energy Edexcel
18:08 Circular Motion Derivation Edexcel
21:50 Resistors in series and parallel Edexcel
23:15 Power Equations