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1.
袁睿 《考试周刊》2011,(13):188-189
我们研究的物理问题有的只涉及单一物体或单一变化过程,但更多的是涉及多个物体组成的系统或多个变化过程,根据问题所提供的条件和求解要求,可选择隔离法和整体法。整体法和隔离法是力学部分常用的分析方法。可以用隔离法,也可以用整体法,或是整体法与隔离法的综合应用。  相似文献   

2.
隔离法就是从整个系统中将某一部分物体隔离出来,然后单独分析被隔离部分的受力情况和运动情况,从而把复杂的问题转化为简单的问题求解.隔离法在求解物理问题时,是一种非常重要的方法,学好隔离法,  相似文献   

3.
隔离法1.隔离法的含义:把复杂的问题分割成几个简单的部分或把物体系分成几个单一的物体,然后分别对这些简单现象或物体进行研究,并找出各个环节间的联系,此种研究方法称为隔离法。  相似文献   

4.
一、隔离法的含义、思维特点及解题步骤 1.隔离法的含义 所谓“隔离法”,就是从一个系统整体中,取一部分或局部与系统整体隔离开来,看作一个独立个体,从研究独立个体入手,来解决系统整体问题的一种解题方法.  相似文献   

5.
在《牛顿运动定律》这部分内容当中,隔离法和整体法的应用相当广泛.正确地用好隔离法和整体法,对培养学生正确分析物体的受力情况和运动情况,顺利解决物理问题打下良好的基础.隔离法和整体法的应用具体表现在以  相似文献   

6.
一、隔离法的含义、思维特点及解题步骤1.隔离法的含义所谓隔离法,就是从一个系统整体中,取一部分或局部与系统整体隔离开来,看作一个独立个体,从研究独立个体入手,来解决系统整体问题的一种解题方法.  相似文献   

7.
对于连接体的平衡问题,在不涉及物体问相互作用的内力时,应首先考虑整体法,其次再考虑隔离法.有时一道题目的求解要整体法、隔离法交叉运用.  相似文献   

8.
连接体是物理中的典型模型,整体法和隔离法是解决连接体问题的基本方法.当只涉及研究系统而不涉及系统内部某些物体的受力和运动时,一般可采用整体法;而为了研究系统(连接体)内某个物体的受力和运动情况时,通常采用隔离法.一般情况下,整体法和隔离法是结合在一起使用的.现结合2010年高考试题浅析整体法和隔离法的应用.  相似文献   

9.
连接体问题的处理常常用到整体法和隔离法,只要我们分清物体的运动过程,灵活地选择研究对象,交叉使用整体法与隔离法就会让问题简化.下面以例题来说明.  相似文献   

10.
中学物理教学中的隔离体解题法(简称隔离法),可以运用于求解动力学问题,也常用来处理静力学问题,应用范围很广,差不多所有研究物体客观性质的力学都离不了它。在中学阶段,应当对学生进行必要的训练,使他们掌握隔离法的技巧。一、隔离法和它的理论基础所谓隔离法,就是根据问题的要求,把需要研究的那部分物体想象地从与之联系着的周围物体中分离出来,单独分析它的受力情况和运动情况的方法。被单独隔离出来进行研究的那个物体(或几个物体组成的物体系),一般就叫做隔离体。  相似文献   

11.
《海外英语》2007,(5):44-45
It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,  相似文献   

12.
一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/  相似文献   

13.
《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?  相似文献   

14.
汉字倒说     
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。  相似文献   

15.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.  相似文献   

16.
王菲 《华章》2007,(12):273-273
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.  相似文献   

17.
裴水妹 《华章》2007,(11):196
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.  相似文献   

18.
19.
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…  相似文献   

20.
钱生钱!     
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了  相似文献   

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