一道英文物理题 结果就行A child slides down a slide with a 23° incline,and at the bottom her speed is precisely three-fifths what it would have been if the slide had been frictionless.Calculate the coefficient of kinetic friction between t

一道英文物理题 结果就行A child slides down a slide with a 23° incline,and at the bottom her speed is precisely three-fifths what it would have been if the slide had been frictionless.Calculate the coefficient of kinetic friction between t 一道英文(sat2)物理题 一道物理题,为什么选A What are the factors affecting the development of a child?应该怎么答,用英文.能不能稍微的详细一点，抓一两个方面，几句话就行了。 物理题一道,第五题为什麽选a? 一道物理题, 一道物理题, 一道物理题, 一道物理题, 一道物理题, 求一些英文短语,类似于with child 和with a child那个什么...就像with child 的意思是怀孕但with a child的意思则是带孩子那样.求各种【看起来差不多】但实则根本不相同的英文短语...急需. . . . . . . . 解一道初二的物理题求解.我写的过程忽略就行 一道物理题,只要分析过程就行了解释第二小题 一道高中物理题~求解析只说明为什么D对就行,谢谢啦 To give birth to a child英文怎么读 一道物理题,只需取值范围就可以了= = 如图一道高二物理题右图是某同学连接的实验实物图,合上开关S后,发现A、B灯都不亮,他采用下列两种方法检查故障：就图中的这个问题 我看参考答案是写：根据测试结果,a b 间有示数,说明b 一道物理题...只是要讲解一下就可以16、丝绸和玻璃棒摩擦后分开,那么结果则是：（B）.A.丝绸和玻璃棒都带正电 B.丝绸带负电,玻璃棒带等量正电 C.丝绸不带电,玻璃棒带正电D.丝绸和玻璃棒