hope you can help me !!!!!Be quick
When we press a rubber sucker against a smooth wall ,
_________________between the sucker and the wall is forced out.________________is lower than that outside .The great atmospheric pressure outside______________.
F1 I.S. WB
2013-02-12 12:41 am
回答 (1)
2013-02-12 1:14 am
✔ 最佳答案
When we press a rubber sucker against a smooth wall , air between the sucker and the wall is forced out._The air pressure inside_is lower than that outside .The great atmospheric pressure outside holds the sucker in place.
收錄日期: 2021-04-13 19:17:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130211000051KK00128