问题
问答题
一个体积为80cm3的物块，漂浮在水面上时，有36cm3的体积露出水面，试问：
（l）物块所受浮力为多少？
（2）物块的密度为多少？（ρ水=1.0×1O3kg/m3，g=10N/kg）
答案
略
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一个体积为80cm3的物块，漂浮在水面上时，有36cm3的体积露出水面，试问：
（l）物块所受浮力为多少？
（2）物块的密度为多少？（ρ水=1.0×1O3kg/m3，g=10N/kg）
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| One evening I heard a loud crash in our quiet neighborhood. 1 that evening, my wife had asked me to go to the store to get some soft drinks.It was a good time to let my teenage daughter Holly practice her 2 , so I sent her to the store in my truck.At dinner my son talked about how much he liked my 3 .I en  joyed having it, but I said: "Guy, my heart is not set on that truck.I like it but it is 4 metal and won' t last forever." After hearing the loud noise, the whole 5 ran outside.My son shouted: "Dad, Dad, Holly crashed your truck." My heart sank and my mind was 6 with conflicting thoughts. Was anyone hurt? Who else was involved? As I ran to the door, I heard a voice in my 7 saying: "Here is a chance to show Holly what you really 8 .She' 11 never forget it." The accident had occurred in my own driveway.Holly had crashed my truck into our other car. Holly was not 9 physically but when I reached her, she was crying and saying: " Oh, Dad, I'm sorry.I know how much you love this truck." I held her in my arms as she cried. Later that week a friend 10 by and asked what had happened to my truck.I told her the whole 11 . Her eyes moistened(润湿) and she said: "That happened to me when I was a girl.I 12 my dad' s car and ran into a log that had fallen 13 the road.I ruined the car.When I got home my Dad knocked me to the ground and began to kick me. Over 40 years later, she still felt the 14 of the night.It was a deep wound on her 15 . I remember how 16 Holly was on the night she crashed our truck, and how I 17 her.One day, when Holly thinks 18 in the future, I want her to know that I love her a thousand times more than anything else. I repaired the car, but the dent(凹陷)in my truck is 19 there today.Every day it reminds me of what really 20 in my li  fe. | ||||
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