论文部分内容阅读
题1估一估,你大拇指指甲上所受的大气压力大约为多大?相当于1根鸡毛重?一支钢笔重?还是几斤酒重?解人体大拇指指甲的面积约为1厘米2,大拇指所受的大气压强约为ρ=1.01×105帕,则大拇指上所受的压力约为:厂一POS。1.ofxlof帕xlx10-‘米’。10牛.小小一个大拇指表面
Question 1 Estimated, how big is the atmospheric pressure on your thumb nails? The equivalent of a chicken weight? A pen heavy? Or a few kilograms of wine? The area of thumb nails is about 1 cm2. The atmospheric pressure of the thumb is about ρ=1.01×105 Pa. Then the pressure on the thumb is about: a factory POS. 1. Ofxlof par xlx10-’m’. 10 cattle. Little one thumb surface