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山西太原2024-2025学年高三期末学业诊断物理答案.pdf

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12024~2025 学年第一学期高三年级期末学业诊断物理参考答案及评分建议一、单项选择题:本题包含 7 小题,每小题 4 分,共 28 分。二、多项选择题:本题包含 3 小题,每小题 6 分,共 18 分。题号8910选项ABBCABC三、实验题:共 16 分。11.(7 分)(1) 1.20 (1 分)12.0 (2 分) (3)右(2 分) (4)小于(2 分)12.(9 分)(1)(2 分)(3)(2 分)题号1234567选项CABBDDD2(4)1.11(1.00-1.30)(1 分)1.31(1.00-1.60)(2 分)(5)小于(1 分)小于(1 分)四、计算题:共 38 分。13.(8 分)(1)在 t 时间内,cd棒、ab棒均由静止开始运动cd 棒:Ft - I 安 = mv··················································(1 分)ab 棒: I 安 = mvab ····················································· (1 分)vab = - v····························································· (2 分)(2)cd 棒由静止开始做加速度减小的加速运动,ab 棒由静止开始做加速度增大的加速运动。经过足够长的时间,两棒以相同的加速度做匀加速直线运动cd 棒:F-BIL=ma···················································· (1 分)ab 棒:BIL=ma·······················································(1 分)I =△ ································································ (1 分)△ = ······························································· (1 分)14.(12 分)(1)质子在直线加速器中做直线运动6e =mv02························································· (2 分) = ··························································· (2 分)(2)质子在圆形区域电场中做类平抛运动eE = ma·································································(2 分)R + Rcosθ = t······················································ (2 分)Rsinθ =at2··························································· (2 分)3E =(+)························································· (2 分)15.(18 分)(1)小球刚要离开地面时qv0B = mg······························································ (2 分)v0 =······················································· (2 分)(2)小球在 OO'由静止开始加速qEx = mv02 - 0······················································ (2 分)x =······························································ (2 分)(3)小球重力与电场力的合力为恒力 F 合,设 F 合与水平方向夹角为θF 合= () + ()··························...

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山西太原2024-2025学年高三期末学业诊断物理答案.pdf

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