某兴趣小组为测一遥控电动小车的额定功率,进行如下实验,用天平测出电动小车的质量①用天平测出电动小车的质量为0.4kg;②将电动小车、纸带和打点计时器按如图甲所示安装;一辆车放在平
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![某兴趣小组为测一遥控电动小车的额定功率,进行如下实验,用天平测出电动小车的质量①用天平测出电动小车的质量为0.4kg;②将电动小车、纸带和打点计时器按如图甲所示安装;一辆车放在平](/uploads/image/z/11154126-30-6.jpg?t=%E6%9F%90%E5%85%B4%E8%B6%A3%E5%B0%8F%E7%BB%84%E4%B8%BA%E6%B5%8B%E4%B8%80%E9%81%A5%E6%8E%A7%E7%94%B5%E5%8A%A8%E5%B0%8F%E8%BD%A6%E7%9A%84%E9%A2%9D%E5%AE%9A%E5%8A%9F%E7%8E%87%2C%E8%BF%9B%E8%A1%8C%E5%A6%82%E4%B8%8B%E5%AE%9E%E9%AA%8C%2C%E7%94%A8%E5%A4%A9%E5%B9%B3%E6%B5%8B%E5%87%BA%E7%94%B5%E5%8A%A8%E5%B0%8F%E8%BD%A6%E7%9A%84%E8%B4%A8%E9%87%8F%E2%91%A0%E7%94%A8%E5%A4%A9%E5%B9%B3%E6%B5%8B%E5%87%BA%E7%94%B5%E5%8A%A8%E5%B0%8F%E8%BD%A6%E7%9A%84%E8%B4%A8%E9%87%8F%E4%B8%BA0.4kg%3B%E2%91%A1%E5%B0%86%E7%94%B5%E5%8A%A8%E5%B0%8F%E8%BD%A6%E3%80%81%E7%BA%B8%E5%B8%A6%E5%92%8C%E6%89%93%E7%82%B9%E8%AE%A1%E6%97%B6%E5%99%A8%E6%8C%89%E5%A6%82%E5%9B%BE%E7%94%B2%E6%89%80%E7%A4%BA%E5%AE%89%E8%A3%85%3B%E4%B8%80%E8%BE%86%E8%BD%A6%E6%94%BE%E5%9C%A8%E5%B9%B3)
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