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【单选题】

通过量纲分析,引力常数g和腿长l的乘积的几次方是与人步行速率v直接相关的()。

A.
1.0
B.
2.0
C.
3.0
D.
0.5
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参考答案:
参考解析:
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【单选题】在量纲分析中,选择的基本物理量的量纲一定是( )

A.
独立的
B.
不独立的
C.
可能独立、也可能不独立
D.
需根据具体过程判定

【单选题】“量纲分析的直接效果就是把原先的单变量组合成了量纲为1的数群,但所研究问题的变量个数并没有减少”。这句话()

A.
前半句对,但后半句不对
B.
前半句对,后半句也对
C.
前半句不对,但后半句对
D.
前半句不对,后半句也不对

【单选题】Passage One Gravity is a slippery beast. We don’t know how strong it is, how it works or how fast its effects move. But this year we made progress. October saw the most accurate measurem...

A.
Newton and Einstein had similar opinions on the speed of gravity
B.
the author of the passage is in favor of Einstein’s thought about the speed of gravity
C.
astronomers think that both Newton and Einstein were wrong on the speed of gravity
D.
Newton’s thought about the gravitational effect is out of date

【单选题】Gravity is a slippery beast. We don’t know how strong it is, how it works or how fast its effects move. But this year we made progress. October saw the most accurate measurement yet of Newton’s gravit...

A.
two things far apart might vibrate in unison
B.
the ripples in space-time are only imagined
C.
there exist gravitational waves
D.
abrupt, violent cosmic s lead to gravitational waves

【单选题】量纲分析的目的在于()。

A.
得到各变量间的确切定量关系
B.
用量纲为一的数群代替变量,使实验与关联简化
C.
得到量纲为一数群间定量关系
D.
无需进行实验,即可得到关联式
相关题目:
【单选题】在量纲分析中,选择的基本物理量的量纲一定是( )
A.
独立的
B.
不独立的
C.
可能独立、也可能不独立
D.
需根据具体过程判定
【单选题】“量纲分析的直接效果就是把原先的单变量组合成了量纲为1的数群,但所研究问题的变量个数并没有减少”。这句话()
A.
前半句对,但后半句不对
B.
前半句对,后半句也对
C.
前半句不对,但后半句对
D.
前半句不对,后半句也不对
【单选题】最早测定引力常数的是()
A.
库仑
B.
牛顿
C.
法拉第
D.
卡文迪什
【单选题】Passage One Gravity is a slippery beast. We don’t know how strong it is, how it works or how fast its effects move. But this year we made progress. October saw the most accurate measurem...
A.
Newton and Einstein had similar opinions on the speed of gravity
B.
the author of the passage is in favor of Einstein’s thought about the speed of gravity
C.
astronomers think that both Newton and Einstein were wrong on the speed of gravity
D.
Newton’s thought about the gravitational effect is out of date
【单选题】Gravity is a slippery beast. We don’t know how strong it is, how it works or how fast its effects move. But this year we made progress. October saw the most accurate measurement yet of Newton’s gravit...
A.
two things far apart might vibrate in unison
B.
the ripples in space-time are only imagined
C.
there exist gravitational waves
D.
abrupt, violent cosmic s lead to gravitational waves
【单选题】量纲分析的目的在于()。
A.
得到各变量间的确切定量关系
B.
用量纲为一的数群代替变量,使实验与关联简化
C.
得到量纲为一数群间定量关系
D.
无需进行实验,即可得到关联式