英文关于电磁的物理题
问题描述：
英文关于电磁的物理题
How far does the electron of a hydrogen atom have to be removed from the nucleus for the force of attraction to equal the weight of the electron at the surface of the earth?
答
一个氢原子的电子应该从原子核被转移多远能够等同于这个电子在地球表面所受的吸引力的重量.