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一、妙用速算法[北京卷题19]:一人看到闪电12.3s后又听到雷声。已知空气中的声速约为330m/s～340m/s,光速为3×108m/s,于是他用12.3除以3很快估算出闪电发生位置到他的距离为4.1km。根据你所学的物理知识可以判断A、这种估算方法是错误的,不可采用B、这种估算方法可以比较准确地估算出闪电发生位置与观察者间的距离C、这种估算方法没有考虑光的传播时间,结果误差很大D、即使声速增大2倍以上,本题的估算结果依然
First, the magical speed algorithm [Beijing Volume 19]: One saw thunder after hearing 12.3s of lightning. It is known that the speed of sound in the air is about 330m/s to 340m/s, and the speed of light is 3x108m/s, so he uses 12.3 divided by 3 to quickly estimate that the distance from the location of lightning to his distance is 4.1km. According to your knowledge of physics, you can judge A. This kind of estimation method is wrong. You can’t use B. This kind of estimation method can accurately estimate the distance between the location of lightning and the observer. C. This method of estimation does not consider The propagation time of the light results in a large error D. Even if the speed of sound increases by more than two times, the estimation result of this problem still remains.