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Vadim26 [7]
3 years ago
10

25 POINTS HELP ME I have to make a thermos in science class using a styrofoam cup, cottonballs, and tinfoil. It has to keep wate

r cold for as long as possible. What is the best way to make a thermos out of this stuff to keep it cold? Tape cottonballs around the cup and put tinfoil on the outside? I HAVE NO IDEA HELP ME PLEASE. Thanks! :)
Physics
2 answers:
Eddi Din [679]3 years ago
8 0

Line the outside of the cup with the tinfoil. Then put the cotton balls inside. Finally, line the cotton balls with the tinfoil and smush it all together.

alexira [117]3 years ago
6 0

so tape the tin foil on the inside of the cup, and out the cotton balls around the top. foil keeps things cold, so you will want it inside the cup

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