Anonymous
Anonymous asked in 科學及數學數學 · 10 years ago

IS workbook answer

Plx help me to find out the answer .Thz! :) (Understanding Integrated Science Assignments 1B) WB pg.63

1(a.)When the rubber is pressed,____________between the mirror and rubber stucker are pushed out. The air pressure outside is ________________________.

(b)The survace of the sand paper is __________,____________ are still trapped between the rubber sucker and the sand paper when the rubber sucker is pressed. Therefore______________________________________________________________.

Thz so much !

2 Answers

Rating
  • 10 years ago
    Favorite Answer

    air particles

    decreases

    greater than that inside and pushes the rubber sucker to the mirror firmly

    rough

    air particles

    the rubber sucker cannot stick to the sand papper

    Source(s): 自己o既答案
  • 10 years ago

    Thz! :> a lot!

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