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The magnet riddle ft YouTube CEO Susan Wojcicki
Can you solve the bottle riddle and the magnet riddle?
Physics Girl
Stephen Hawking's Final Theory on Black Holes
The black hole information paradox and Soft Hair
Physics Girl
Can explosions work in space?
The most exciting SciFi movies have tons of space explosions.
Physics Girl
Strange Sand Acts Like Liquid
Bubbling air through sand can cause it to act like a liquid.