浅谈如何用图象“面积”解物理高考试题

高中物理涉及物理图象中的"面积"内涵非常丰富。图象中的图线与坐标轴所围"面积"具有一定的物理意义,运用图象"面积"解决物理问题是一种重要的方法。用图象"面积"解物理高考试题具体从三个方面加以阐述即(1)已知图象,利用"面积"求解高考题;(2)自构图象,利用"面积"求解高考题;(3)转换图象,利用"面积"求解高考题。     

探究物理图象中“面积”的妙用

物理图象是一种特殊的语言和工具,用图象法能形象地表达物理规律、直观地叙述物理过程、鲜明地表达物理量间的依赖关系．物理图象的“面积”表示Y轴物理量在x轴物理量上的积累效果,如压强一体积图象中所围的“面积”代表压力做的功,力一时间图象所围的“面积”为该力的冲量,力一位移图象所围的“面积”为该力做的功、电流一时间图象所围的“...     

“面积”在高中物理图象解题中的应用

高中物理是一门具有极强抽象性、概括性的学科,图象作为高中物理的三大语言之一,往往在处理复杂问题中具有重要意义.而图象＂面积法＂是解决物理问题的重要手段之一.通过应用图象＂面积＂能够将复杂问题简单化,抽象问题形象化.同时,若巧妙应用图象面积能够使学生收到意想不到、事半功倍的解题效果.本文则以具体实例来探讨如何应用图象＂面积＂来解题.     

巧用图象“面积”解题

物理图象是高中物理的重要内容,巧用图象,可使一些疑难题得解;利用图象,可使解题过程简明、清晰.尤其是图象面积在物理解题时灵活应用,可以用来表示不同的物理量.下面笔者举例说明应用图象面积解题.一、v-t图象中的面积表示物体的位移例1如图1所示,甲、乙两光滑斜面高度和长度均相同,但其结构不同.将两个相同的     

v-t图象的面积在运动学中的妙用

正用图象法解题可以避免繁杂的中间运算过程,具有简明快捷、准确和方法新颖独特等优点,况且有些物理问题在高中阶段只能用图象法解决,而图象中"面积"的应用对培养学生的物理能力大有裨益.在物理图象的学习和应用中,我们可以从坐标、斜率、截距、面积、交点、拐点等方面分析不同的图象所代表的物理意义,本文仅从v-t图象"面积"表示物体的位移出发,阐释图象面积的妙用.一、巧用v-t图象的面积,证明匀变速直线运动的两条规律例1证明作匀变速直线运动的物体,在相邻相等时间内     

对“匀变速直线运动的位移与时间关系”的导出方法的一些思考

由匀速直线运动v-t图象中“面积”代表“位移”,想到匀变速直线运动v-t图象中“面积”是否也代表“位移”,再用实验验证,学生易于接受,也培养了学生的探究能力。由匀速直线运动速度图象中“面积”的物理意义,迁移到在匀变速直线运动速度图象中的“面积”是否也具有同样的物理意义,提出猜想有根有据、合情合理,符合高一学生的认知水平。     

用“面积“解释物理(高一、高二、高三)

图象能形象地表达物理规律、直观地描述物理过程、鲜明地表示物理量之间的依赖关系,因此图象在中学物理解题中具有广泛的应用.而一般图象与它对应的坐标轴之间的面积往往也能代表一个物理量.本文介绍用“面积”如何解释物理. 1.v-t,图象:图线与l轴所夹的面积代表位移.     

用物理图象巧解题

有些物理图象的线与坐标轴所围面积数值,表示某物理量的量值．巧妙地利用这些物理图象的面积可有效地解决某些力学问题．     

力学物理图像的应用

一、巧用图像的面积图线与坐标轴所围的面积表示相关的过程量(如图1所示),如v-t图象中,图线与坐标轴所围面积表示位移;F-s图象中,图线与     

也谈利用图象面积计算物理问题

物理规律、原理不仅用公式来表示各物理量之间的内在联系．而且，有些规律还可用图象表示．利用图象有时可很巧妙地解决问题，物理意义也显而易见．本文就高中阶段，利用图象面积解决有关物理问题主要有二种情况：图线与坐标轴构成的面积，线上某点与对应坐标轴构成的矩形面积．     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

不同的吃喝玩乐

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/     

漏洞百出的教育

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?     

只要努力,不要后悔

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.     

浅谈移民问题

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.     

Sister Carrie, an Adherent of Desires

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.     

Improvement of one-cycle controller by use of proportional integral differential controller

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

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.