【導(dǎo)讀】考生作答時，將答案答在答題卡上（答題注意事項見。答題卡），在本試題卷上答題無效。和答題卡一并交回。x軸運動的v-t圖像如圖所示，規(guī)定向右為正方向，圖丙中點電荷q到MN的距離OA. 斜面對物體的支持。a在OP上的落點與。在豎直平面內(nèi)自由轉(zhuǎn)動?，F(xiàn)使小球在豎贏平面內(nèi)做圓周運。是圖線與縱軸、橫軸的交點、圖線上第一周期內(nèi)的最低點，該三點的縱坐標(biāo)分別是1、0、-5。下列說法中正確的是。若月球繞地球運動的周期為T，線速度為v，引力常量為。表，從某時刻開始在原線圈c、d兩端加上交變電壓，從H點沿HG方向射入電場后恰好從F點射出。選考題，考生根據(jù)要求作答。打點計時器會在紙帶上打出一系列的小點。6與0點的距離分別為x1、x2. 測量電路中，測出A1的電壓和電流，再計算出r1。際上不可行，其最主要的原因是______________；方框中畫出實驗電路圖，并在圖中標(biāo)出所用器材的代號；r1=____，式中各符號的意義是________________.恒力，恒力大小為F=10N。

　　

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