Why are two balls connected by a spring a good model for two

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/04/30 07:37:05

Why are two balls connected by a spring a good model for two atoms connected by a chemical bond?
A.If the two atoms get closer together than the equilibrium interatomic distance,they repel each other.
B.If the two atoms get farther apart than the equilibrium interatomic distance,they attract each other.
C.Each spring represents a real microscopic coiled metal wire that connects two adjacent atoms.
D.The magnitude of the force one atom exerts on another is proportional to the stretch or compression of the bond between them.
已知选A+B,A+B+C,A+B+C+D,C+D,C,D这样选择都不对.给理由.

a是正确的,两原子太接近即遭受排斥
b是正确的,理由与上面类似,太远即吸回来
c是错误的,弹簧不能代表真实存在的化学键
d是正确的,所受力的大小与弹簧被拉伸或者压缩成正比,f=kx,x为型变量
这个题目虽然看似和化学联系起来,实际上考查的还是物理上面关于弹簧的知识.
再问：化学键是?microscopic coiled metal wire? 这个是化学键的意思吗? 而且为什么不能代表?
再答：不好意思，microscopic coiled metal wire这个不是化学键的意思，这是“微小的金属线圈”，这个选项的大意是“弹簧可以代表真实存在的连接两个原子的微小金属线圈”，而两个原子之间实际上是没有任何实物联系着他们，都是靠原子之间的作用力联系着的。

Two charged spherical conductors are connected by a long con ( )in the sports bag? Two tennis balls A：What are B:What doe There is a pen and two balls.和Where are the mother and her b Two good dancers are ( ) for the show .A wanting B.want C.wa Two balls and a cat ___ ___ the table. you are two for two we want _ for the Spring Feastival.A:two boxes of apple B:tw 英语翻译Spring and fall are two ( )when many people catch a cold for a day or two there are ( ) for you A two piece of news B two piece of new 英语翻译we construct a two-country general equilibrium model of 求翻译：Two of them are given by a foreign teacher,so they are a