回視聴
8:54
Coercivity & retentivity (Permanent & electromagnets) | Magnetism & matter | Physics | Khan Academy
8:41
Campaign finance | Political participation | US government and civics | Khan Academy
5:23
Khan Academy and Code.org | Hardware and Software
7:20
Stress management | Processing the Environment | MCAT | Khan Academy
5:16
Sound Properties (Amplitude, Period, Frequency, Wavelength) | Physics | Khan Academy
3:24
Soaps and detergents | Carbon and its compounds | Class 10 Chemistry | Khan Academy
11:28
What are inductors? (self-inductance) | Electromagnetic induction | Khan Academy
13:40
Hysteresis & magnetic retention | Magnetism & matter | Physics | Khan Academy
