November 2023 Paper 12 | Cambridge A Level Physics 9702

I explain the solutions to Cambridge International A Level Physics 9702 Paper 12 from October/November 2023. Easy questions skipped: questions 1, 2, 5, 12, 16, 19, 25, 34 and 35.
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00:00 Intro
00:10 Question 3 Acceleration
01:52 Question 4 Aeroplane
04:01 Question 6 Projectile on the Moon
06:41 Question 7 Two blocks
08:32 Question 8 Resultant force
08:48 Question 9 Helicopter
09:27 Question 10 Collision
11:47 Question 11 Moment
12:43 Question 13 Force from air flow
13:37 Question 14 Upthrust (Note that the two objects have different weights but the same upthrust because they are held by some unknown force in the liquid.)
16:13 Question 15 Electric car
18:45 Question 17 Gravitational potential energy
19:50 Question 18 Spring constant
21:50 Question 20 Phase difference
22:42 Question 21 Transverse wave on rope
23:58 Question 22 Doppler effects
24:35 Question 23 Electromagnetic spectrum
25:26 Question 24 Polarisation
27:07 Question 26 Stationary wave
28:24 Question 27 Diffraction
28:58 Question 28 Double slit
29:39 Question 29 Diffraction grating
30:57 Question 30 Charge on oil droplet
31:26 Question 31 Power dissipated in resistor
33:08 Question 32 Current in wire
35:12 Question 33 Thermistor and LDR
37:28 Question 36 Resistor network
38:17 Question 37 Galvanometer
40:26 Question 38 Isotopes
41:19 Question 39 Charge-to-mass ratio
43:27 Question 40 Quarks
Comment below if you have any questions.