who can do it16.直线AB是光滑木板与棉布的分界线(木板与棉布处在同一水平面上),然后使一个小线轴(如缝纫机上的线轴)沿着与直线AB成一角度的方向PO匀速滚动,可以看到,线轴在棉布上滚动
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 04:51:17
whocandoit16.直线AB是光滑木板与棉布的分界线(木板与棉布处在同一水平面上),然后使一个小线轴(如缝纫机上的线轴)沿着与直线AB成一角度的方向PO匀速滚动,可以看到,线轴在棉布上滚动who
who can do it16.直线AB是光滑木板与棉布的分界线(木板与棉布处在同一水平面上),然后使一个小线轴(如缝纫机上的线轴)沿着与直线AB成一角度的方向PO匀速滚动,可以看到,线轴在棉布上滚动
who can do it
16.直线AB是光滑木板与棉布的分界线(木板与棉布处在同一水平面上),然后使一个小线轴(如缝纫机上的线轴)沿着与直线AB成一角度的方向PO匀速滚动,可以看到,线轴在棉布上滚动的方向发生了改变.所示,一束光从空气斜射入玻璃中时传播方向也发生了改变.
(1)可知当线轴的甲轮刚接触到棉布时,其速度的大小将 (变小/ 不变/变大),此时乙轮速度的大小将 (变小/不变 /变大)
(2)两种类似现象可知,光由空气斜射入玻璃时而发生折射现象的原因可能是 .
who can do it16.直线AB是光滑木板与棉布的分界线(木板与棉布处在同一水平面上),然后使一个小线轴(如缝纫机上的线轴)沿着与直线AB成一角度的方向PO匀速滚动,可以看到,线轴在棉布上滚动
1、甲轮速度变小,乙轮速度不变.
2、光折射的原因可能是,玻璃对光传播的阻力比空气大.
who can do it16.直线AB是光滑木板与棉布的分界线(木板与棉布处在同一水平面上),然后使一个小线轴(如缝纫机上的线轴)沿着与直线AB成一角度的方向PO匀速滚动,可以看到,线轴在棉布上滚动
who can do it?
Who can do it这是什么意思呢?
Who can accompany me to do it
Who can tell me how can I do for myself?
To my want,I can't do anything.I can do what ,who can tell me?
For those who can't do,teach;for those who can't teach,teach gym.
who can tell me what should i do
Who can tell me ,what should i do
Who can tell me what should I do 是什么意思
“what should i do?who can tell me?
请问What can I do?Who care about me?
How can you do for the people who need help?
Can you tell me who do you like?over again
I have hemorrhoids how to do? Who can help me?
We are who we are,just do what we can
Who can tell me how to do it?
Who can tell me how do I change?