把一根铜丝在铅笔上一圈圈密排列绕弯50圈,用刻度尺测得该线圈的长度为7.05厘米.那么,铜丝的直径是___,所用刻度尺的最小刻度是___.
把一根铜丝在铅笔上一圈圈密排列绕弯50圈,用刻度尺测得该线圈的长度为7.05厘米.那么,铜丝的直径是___,所用刻度尺的最小刻度是___.
把一根铜丝在铅笔上一圈圈密排列绕弯50圈,用刻度尺测得该线圈的长度为7.05厘米.那么,铜丝的直径是___,所用刻度尺的最小刻度是___.
把一根铜丝在铅笔上一圈圈密排列绕弯50圈,用刻度尺测得该线圈的长度为7.05厘米.那么,铜丝的直径是___,所用刻度尺的最小刻度是___.
想得太复杂了反而不好做,不要考虑绕线圈时铜丝的倾斜,铜丝直径为7.05/50=0.141CM,最小刻度是mm
自己算
0.141cm 1mm
7.05÷50=0.141(cm)=1.41(mm)
最小刻度是1mm(毫米)
不记啊!!!
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收起
第一个0.141 第二个1mm
7.05÷50=0.141(cm)=1.41(mm)
最小刻度是1mm(毫米)