这个物理实验是关于压强的,
问题描述：
这个物理实验是关于压强的,
拿一个水杯,装3/4的水,然后在杯上用一张纸盖住,把它翻转过来,纸不掉下来,这说明外面的大气压与内部的大气压相同.
答
Take a cup,fill three quarter of it with water,cover the cup with a piece of paper,then turn it over.the paper will not fall.this shows that the atmospheric pressure outside and inside of the cup is the same.