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0:29
Introduction to Khan Academy Kids
8:54
Coercivity & retentivity (Permanent & electromagnets) | Magnetism & matter | Physics | Khan Academy
7:28
The spotlight model of attention and our ability to multitask | MCAT | Khan Academy
8:48
Why do sounds get softer? | Mechanical waves and sound | Physics | Khan Academy
5:51
Problem solving | Processing the Environment | MCAT | Khan Academy
6:29
Constrained optimization introduction
7:49
Acid-base definitions | Chemical processes | MCAT | Khan Academy
8:41
Campaign finance | Political participation | US government and civics | Khan Academy
