When a physics teacher knows his stuff !!
OMG!
#WalterLewin #physics
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![Benny Benassi presents The Biz - No Matter What You Do [Official Video]](https://sun9-4.userapi.com/c628729/u895675601/video/l_d3a6d848.jpg)
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![Enur ft. Natasja - Calabria 2007 (Official HD Video) [2007] | MINISTRY VAULTS](https://sun9-61.userapi.com/KqFPneq1yKt0-DWXvqDfZzOWNhdVq3_MGvrsaA/A9lU-8L31cU.jpg)
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