Why the narrower attachment of a vacuum cleaner can pick up heavier dirt pacticles than the wider attachment?
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a question about science
2007-10-02 6:06 am
回答 (1)
2007-10-02 6:09 pm
✔ 最佳答案
Because the thinner part of the vacuum can just concentrate on one tiny part of the carpet with the same amount of force, while the wider part vacuum a bigger area.
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收錄日期: 2021-04-29 19:04:59
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https://hk.answers.yahoo.com/question/index?qid=20071001000051KK05922