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两质点运动的时间分别为

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23.(16分)两质点抛出后都做平抛运动,设容器的半径为R,

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   (3)S2  (2分)              (4)2.0(3分)

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22.I(1)4.22;  4.00M或4.01M;4.01M或4.02M(一空正确得2分,两空正确得3分,全部正确得4分)

(2)C (2分)

II(1)R3R1(3分)            (2)电路如图所示(4分)

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14、D   15、A   16、D  17、BD  18、D  19、AD  20、B  21、AD

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31、(20分,每空2分)

(1)______________________。

(2)①__________                _______;②_______     _________________

(3)                                                                        

(4)

a. __________________  __________________。

c. __________________;__________________,

④实验现象及结论预测:

a.                                                                               

b.                                                                        

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

物理答案:

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30、(共22分,每空2分)

Ⅰ、(12分,每空2分)

(1)                                                                      

(2)___________,___________,                                            

(3)___________,                                                        

Ⅱ、(10分,每空2分)

              

                   

                             

                                                                        

                     

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29、方案一:

(1)___________________________________________________________

(2)____________________________________________________________

(3)________________________________, ____________________________________

(4)____________        _______                                   ______
方案二:
(1)____________________________________。
(2)_________________, ______________________________________          
(3)____________________________________________                        

 

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       28、(1)A                       E                    H                 

(2)            

       (3)                                 

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26、(1)C元素的名称__________________________________
(2)___________________________________________
(3)__________________              ____    ___
(4)①____________, ________mL, _________mL。
②________, _____   ___mL, ___________mL。
27、⑴__________________    ____

⑵_________________________     ____  _____________________________________

⑶______________   _________________  _____________ _______________    ____

⑷_____________________________________________

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