题目
求大神做一道英文物理题
Because th Sun rotates on its axis,one edge of Sun moves toward Earth and the other moves away.The Sun rotates approximately once every 25 days,and the diameter of the Sun is 1.4*10^9m.Hydrogen on the Sun emits light of frequency 6.16*10^14Hz from the two sides of the Sun.What changes in the wavelengh are observed?
Because th Sun rotates on its axis,one edge of Sun moves toward Earth and the other moves away.The Sun rotates approximately once every 25 days,and the diameter of the Sun is 1.4*10^9m.Hydrogen on the Sun emits light of frequency 6.16*10^14Hz from the two sides of the Sun.What changes in the wavelengh are observed?
提问时间:2020-08-03
答案
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
最新试题
热门考点
- 1在乙烯分子中的杂化成键方式
- 2四大名著中的成语
- 3How did Christmas originate before?
- 4In a village five kilometers a____ from the town
- 5下列运算正确的是( ) A.-2(3x-1)=-6x-1 B.-2(3x-1)=-6x+1 C.-2(3x-1)=-6x-2 D.-2(3x-1)=-6x+2
- 6为什么这里用副词修饰名词?
- 7Mike looks ________ than Peter,but they are of the same age.
- 8我看到草原(扩句) 扩两处以上
- 9the old man likes wearing b( )
- 10农场有牛、羊共160头,卖出羊的10%,又买进30头牛,这时牛羊头数相等,问原有牛羊各多少头?