Estimatethepercenterrorinmeasuringa)adistanceofabout75cmwithameterstick;b)amassofabout12gwithachemicalbalance;c)atimeintervalofabout6minwithastopwatch;key:a)0.1%b)0.008%c)0.03%呜呜~不是翻译~是怎么出来

Question

Estimate the percent error in measuring
a) a distance of about 75cm with a meter stick;
b) a mass of about 12 g with a chemical balance;
c) a time interval of about 6 min with a stopwatch;
key:a) 0.1% b)0.008% c)0.03%
呜呜~不是翻译~是怎么出来的结果~

Answer 1

估算测量中的百分比误差
a）用一米长的棍子测量一段大约75厘米的距离；
b）用化学天平测量大约12克的物质；
c) 用秒表测量一段长约6分种的时段；