试题与答案

有一体积为1dm3的木块,密度为0.6×103kg/m3,求: (1)木块所受到

题型:问答题

题目:

有一体积为1dm3的木块,密度为0.6×103kg/m3,求:

(1)木块所受到的重力是多少?

(2)当它漂浮在水面上静止时,排开水的体积是多少?

(3)若用力把木块刚好全部压入水中,需加多大的力?(g取10N/kg)

(解答要求:要写出依据的主要公式或变形公式,要有数据代入和运算结果)

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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       Traveling by train is slower than by plane, but one can see the country he is traveling through.

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1. According to the passage, the fastest way of traveling is _______.

A. by car

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A. enjoy the longest journey

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C. Planes

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C. it is very cheap

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