天津市五区县重点校2024-2025学年高三上学期1月期末物理答案
重点校期末高三物理参考答案第1页(共3页)2024~2025学年度第一学期期末重点校联考高三物理参考答案一、单项选择题(本题共5小题,每题5分,共25分)12345CADCB二、多项选择题(本题共3小题,每题5分,共15分,每小题都有多个正确答案,漏选得3分,错选不得分。)678BDABBC三、填空题(每空2分,共12分)9.(1)A;(2)1.0;1.5;10.(1)4.5;0.80或0.8;(2)小于;11.【详解】(1)物块P由静止到最低点:-------2分物块P做圆周运动至最低点时轻绳恰好被拉断,拉断前的瞬间,拉力和重力的合力提供向心力-------2分代入数据解得-------1分...
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