西安交通大学出版社《大学物理》答案:第九章 (1) D (2) (1) (2) 2 eV4 等势线是中垂面内半径为x的圆圆心在两电荷连线的中点6 8 00?10-8 Cm2?102 NC?10-8 Cm2?103 NC ?102 V?102 V?102 ?10-5 (1) (2) (
习题11-1.已知质点位矢随时间变化的函数形式为其中为常量.求:(1)质点的轨道(2)速度和速率解:(1) 由知: 消去t可得轨道方程:∴质点的轨道为圆心在(00)处半径为R的圆(2)由有速度:而有速率:1-2.已知质点位矢随时间变化的函数形式为式中的单位为m的单位为s求:(1)质点的轨道(2)从到秒的位移(3)和秒两时刻的速度解:(1)由可知 消去t得轨道方程为:∴质点的轨道为抛物线
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to edit the title text line LevelNinth Level上海交通大学出版社 上海交通大学出版社 第一册应用型研究生英语系列教材A Practical English Course for Postgraduate Students 研究生英语应用教程BackNextUnit FourTable of ContentsReadingSpeakingT
第二册TranslationBack3. sport-utility vehicleA sport-utility vehicle (SUV) is a generic marketing description for a rugged automotive vehicle similar to a station wagon but built on a light-truck chassi
第一册TranslationBackReadingReading — Passage ANextReadingReading — Passage AReadingBack6. Coco ChanelGabrielle Bonheur Coco Chanel (August 19 1883―January 10 1971) was a pioneering French fashion design
第二册TranslationBack5. webinarA webinar is a neologism to describe a specific type of web conference. It is typically one-way from the speaker to the audience with limited audience interaction such as
第二册SpeakingReadingReading — Passage ABackReading — Passage BClick HereBackBackNextIntroductions can be repetitive and its important to maintain the attention of the audience by varying the words y
第二册TranslationBack3. RAM (random-access memory)Random-access memory is a form ofputer data storage. Today it takes the form of integrated circuits that allow the stored data to be accessed in any
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