高二物理下學(xué)期第二次周練試題[大全5篇]-文庫(kù)吧資料
2024-11-09 12:33本頁(yè)面
【正文】 sn’t take you too much time and can be favorite cartoons and , keep a paper for writing down humor you find in everyday life.“Good ideas e and go fast, you have to capture them quickly or they are gone,” says Virginia when you need it most.“” says edian Bill Cosby.“And once you find laughter, no matter how painful your situation might by, you can survive it,” he Alan, a sociology professor at the University of Minnesota, claims that laughter is a skill we can all gain – because it es naturally..Just remember: we are just here for a period, so get a few ．You can soften the worst blows through ．Mix with people who ．Practise the art of ．Keep a laughter ．He who laughs last laughs ．But it’s also something that has to be ．People’s joy can affect those around Why is setting goals so ______1_____（importance）? Because goals can help you do, be, and experience everything ____2_____ you want in _____3____ just letting life happen to you, goals allow ______4_____ to make your life (success)and happy people have sets lots of goals to help them reach their setting goals you are taking control of your ’s _____6____ having a map to show you _____7____ you want to in life set goals and follow through with decide what they want in life and then get there by making plans and _____8___(set) people just let life happen by aren’t difficult to set, and _____9_____aren’t difficult to is up to you to find out what your goals really are ____10____one who must decide what to do and in what direction to aim your （共10小題；每小題1分，滿(mǎn)分10分）文中共有1O處語(yǔ)言錯(cuò)誤，每句中最多有兩處。e will have finished it’s lunar program by 39。e 2, Chang39。e5 ? 2017 does the word “l(fā)aunch” in paragraph 1 probably mean? can we learn from this passage? has launched Chang39。e 2 is about 65 million km from Earth and is China39。e 1 and Chang39。e 5, according to 39。e 3, Chang39。e 5 and 6 missions, according to Wu.“The program39。e 3 mission marked pletion（完成）of the second stage of the country39。e 5 is proceeding smoothly,” said the administration39。線(xiàn)圈勻速運(yùn)動(dòng)時(shí)，相鄰兩個(gè)線(xiàn)圈的間隔也為L(zhǎng)，線(xiàn)圈運(yùn)動(dòng)到傳送帶中點(diǎn)開(kāi)始以速度2m/s通過(guò)一固定的勻強(qiáng)磁場(chǎng)，磁感應(yīng)強(qiáng)度為5T、磁場(chǎng)方向垂直傳送帶向上，勻強(qiáng)磁場(chǎng)區(qū)域?qū)挾扰c傳送帶相同，沿傳送帶運(yùn)動(dòng)方向的長(zhǎng)度為3L，重力加速度g=10m/s2。線(xiàn)圈運(yùn)動(dòng)到傳送帶右端掉入材料筐中(圖中材料筐未畫(huà)出)。傳送帶總長(zhǎng)8L，與水平面的夾角為=300，始終以恒定速度2m/s勻速運(yùn)動(dòng)。16(10分).水利發(fā)電具有防洪、防旱、減少污染多項(xiàng)功能,是功在當(dāng)代,利在千秋的大事,現(xiàn)在欲在此河段上筑壩安裝一臺(tái)發(fā)電功率為1000千瓦的發(fā)電機(jī)發(fā)電.(注：①水的密度為②流量是單位時(shí)間內(nèi)流過(guò)某一橫截面的體積)(1)設(shè)發(fā)電機(jī)輸出電壓為500V,在輸送途中允許的電阻為,許可損耗總功率的5%,則所用升壓變壓器原副線(xiàn)圈匝數(shù)比應(yīng)是多大?(2)若所用發(fā)電機(jī)總效率為,要使發(fā)電機(jī)能發(fā)揮它的效能,則攔河壩至少要建多高?(g取)17(12分).如圖甲所示,一足夠長(zhǎng)阻值不計(jì)的光滑平行金屬導(dǎo)軌MN、PQ之間的距離L=1m,NQ兩端連接阻值的電阻,磁感應(yīng)強(qiáng)度為B的勻強(qiáng)磁場(chǎng)垂直于導(dǎo)軌所在平面向上,已知金屬棒在內(nèi)通過(guò)的電量是內(nèi)通過(guò)電量的，求:(1)內(nèi)棒通過(guò)的位移。試求：(1)電路中伏特表的示數(shù)。除蓄電池、開(kāi)關(guān)和導(dǎo)線(xiàn)外，可供使用的實(shí)驗(yàn)器材還有：(量程3V)()(量程3A)(阻值額定功率4W)(阻值范圍0—額定電流2A)(阻值范圍0—1000、)(1)電流表應(yīng)選____________，滑動(dòng)變阻器應(yīng)選_____________(填器材前的字母代號(hào))(2)根據(jù)實(shí)驗(yàn)數(shù)據(jù)作出U—I圖象如圖乙所示，則蓄電池的電動(dòng)勢(shì)E=____V，內(nèi)電阻r=____(r保留兩位有效數(shù)字)(3)引起該實(shí)驗(yàn)系統(tǒng)誤差的主要原因是_________________________________。14(共8分).用如圖甲所示的電路，測(cè)定一節(jié)蓄電池的電動(dòng)勢(shì)和內(nèi)電阻。⑵有一個(gè)電流表G，內(nèi)阻Rg=30Ω，滿(mǎn)偏電流Ig=1mA。用它測(cè)量一小球的直徑，如圖1所示的讀數(shù)是mm。下列判斷正確的是()，原線(xiàn)圈輸入功率將變小(44分=16分)，升壓變壓器和降壓變壓器均為理想變壓器，當(dāng)k由2改接為1時(shí)，下列說(shuō)法正確的是(),圓形線(xiàn)圈P靜止在水平桌面上,其正上方固定一螺線(xiàn)管Q,P和Q共軸,Q中通有變化電流i,電流隨時(shí)問(wèn)變化的規(guī)律如圖b所示,P所受的重力為G,桌面對(duì)P的支持力為N,則在下列時(shí)刻()G,P有收縮的趨勢(shì)=G,此時(shí)穿過(guò)P的磁通量=G,此時(shí)P中無(wú)感應(yīng)電流，兩根等高光滑的四分之一圓弧軌道，半徑為r、間距為L(zhǎng)，軌道電阻不計(jì)，在軌道頂端連有一阻值為R的電阻，整個(gè)裝置處在豎直向上的勻強(qiáng)磁場(chǎng)中，磁感應(yīng)強(qiáng)度為B。原線(xiàn)圈輸入的交流電壓如圖乙。第I卷(選擇題)(83分=24分)，正確的是()，但閉合電路中感應(yīng)電流可能減小，閉合電路中不可能有感應(yīng)電流，則閉合電路中的感應(yīng)電動(dòng)勢(shì)一定減小，但閉合電路中感應(yīng)電動(dòng)勢(shì)可能不變，
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