2011-2012学年重庆市西南大学附属中学高二下学期期中考试物理试卷（带解析）

适用年级：高二
试卷号：183794

试卷类型：期中
试卷考试时间：2017/7/19

1.单选题(共4题)

如图所示，位于光滑水平桌面上的小滑块P和Q都可视为质点，质量相等．Q与水平轻弹簧相连，设Q静止，P以某一初速度向Q运动并与弹簧发生碰撞．在整个过程中，弹簧具有的最大弹性势能等于(　　)

A．P的初动能

B．P的初动能的

C．P的初动能的

D．P的初动能的

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如图所示，足够长的传送带以恒定的速率

逆时针运动，一质量为

的物块以大小为

的初速度从传送带的

点冲上传送带，从此时起到物块再次回到

点的过程中，若

下列说法正确的是（　　）

A．合力对物块的冲量大小一定为

B．合力对物块的冲量大小一定为

C．合力对物块的冲量大小可能为零

D．合外力对物块做的功可能为零

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某物体以－定初速度沿粗糙斜面向上滑，并且能够重新下滑到底端．如果物体在上滑过程中受到的合冲量大小为I_上，下滑过程中受到的合冲量大小为I_下，它们的大小相比较为（）

A．I_上>I_下

B．I_上<I_下

C．I_上＝I_下

D．条件不足，无法判定

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正弦交变电源与电阻R、交流电压表按照图甲所示的方式连接，R＝10 Ω，交流电压表的示数是10 V．图乙是交变电源输出电压u随时间t变化的图象．则(　　)

A．通过R的电流_i_R随时间t变化的规律是i_R＝

cos(100πt) A

B．通过R的电流i_R随时间t变化的规律是i_R＝

cos(50πt) A

C．R两端的电压u_R随时间t变化的规律是u_R＝5

cos(100πt) V

D．R两端的电压u_R随时间t变化的规律是u_R＝5

cos(50πt) V

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2.选择题(共3题)

Taobao .com is one of ____ shopping websites in China.

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阅读下面短文，用括号内所给动词的适当形式填空 (必要时可加情态动词或助动词)

Over the last fewyears, people {#blank#}1{#/blank#} (start) to think that plastic bottles are bad. There are many good reasons for this. Plastic bottles take a lot of time to break down, so there are always a lot of them in landfills（废弃物填埋场）.

As the world's largest drink company, the Coca-Cola Company is always able {#blank#}2{#/blank#} ( catch) a good opportunity. It {#blank#}3{#/blank#} (come) up with a new invention, the “Plant Bottle”. The new invention{#blank#}4{#/blank#} partly {#blank#}5{#/blank#} ( make) from plants. Usually, petroleum（石油） is the main material that {#blank#}6{#/blank#} (use) to produce bottles. Therefore, {#blank#}7{#/blank#} (use) plants to produce bottles can cut down the Coca-Cola Company's use of petroleum. Also, the Plant Bottle can be used again. The Coca-Cola Company{#blank#}8{#/blank#} (produce) two billion Plant Bottles by the end of this year.

Muhtar Kent, CEOof the Coca-Cola Company, {#blank#}9{#/blank#} ( tell) a reporter, “We are the first company {#blank#}10{#/blank#} (take) this kind of bottle to the market. This is an important step in our sustainable packaging journey.”

“The Plant Bottle is a kind of innovation. It {#blank#}11{#/blank#} ( show) how businesses can help to deal with climate change problems and put less stress on our valuable natural resources,” said Kate Krebs, the director of Sustainable Resources for the Climate Group.

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Mo Yan is one of ________ writers in the world

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