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上传于：2024-06-15
初二物理第二学期期中试卷
一、填空题：（每空1分，共38分）
1、调节天平横梁平衡的两个步骤是：（1）、_____________________________；（2）、______________________________。如在调节横梁平衡时指针如图所示，则应____________________________。如在称量过程中出现如图所示，则应__________________________________________。
2、水的密度为___________kg/m3,合________g/cm3,其物理意义是__________________________；水的比热容是____________，其物理意义是_________________________________________；g=9.8N/kg,其物理意义是_______________________________________________________。
3、市场上出售的某调和油，瓶上标有“2.5L”字样，已知该瓶内调和油的密度为0.92×103kg/m3,则该油的质量为