拉力做功,There is a soft chain of mass M and length L,its 4/5 is

大一物理题.A uniform steel rod of length 1.20 m and mass of 6.40 一道英语奥数题：there is a box,its length is 6cm,the width is 5cm ,a A uniform solid sphere of mass M and radius R is placed on a Given the area of △ABC is S1 ,and the length of its three si capacity of cubic paper box is 1L.what are its length,width If the perimeter of a rectangle is 40cm ang its length is x Life is a chain of moments of 下面这道题怎么样做啊the length of a rectangle is four times its width. 英语翻译A chain is no stronger than its weakest the gram-equivalent mass of alcl3 is its gram-formula mass d An elephant is 什么than a horse in its length Drinking a lot of soft drinks is