These are common Pakistanis, and I won't wonder if they are not so qualified but truly amazing is that they are having fun using science. Even though they don't know why this all happens and why that sheet of paper flies in the air, they just used science in such a fun way.
When the fire was lit, it filled the inside of the system with hot air and since hot air is lighter than cold air, it caused the system to go up, but only till the inside of the system is hot.
When the fire was lit, it filled the inside of the system with hot air and since hot air is lighter than cold air, it caused the system to go up, but only till the inside of the system is hot.
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