一道英文物理题 十分感激
On their wedding day,my father gave my mother a gold ring.It weighed 3.70g.On their golden wedding anniversary fifty years later,it weighed 3.30g.How many atoms were lost each second,on average,from the ring during that time?The mass of a gold atom is 3.29 乘以10的负27次方kg.There are 86400 seconds in a day and 365.days in a year.