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Hello, subscribers???? Today, I brought you a video that we collaborated with the Geekble channel that we worked with last time! I showed Professor Kim Beom-jun two problems that we prepared on the Geekble channel, and also heard related physics stories. I hope you enjoyed today's video.???? ????Timeline???? 00:00 Intro 02:05 Can you stack a tower with only tennis balls without glue? 08:47 Blowing a funnel vs. sucking it to move a ping-pong ball