文档介绍：?一、选择题?二、填空题?三、计算题?四、问答题大学物理( 1)测试试题二?参考答案 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 一、选择题 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 1. 一质点作直线运动,某时刻的瞬时速度 V=2m/s ,瞬时加速度 a=-2m/s 2,则一秒钟后质点的速度(A) 等于零. (B) 等于-2m/s. (C) 等于 2m/s. (D) 不能确定. Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. θ 2. 在倾角为?的固定光滑斜面上,放一质量为 m 的光滑小球,球被竖直的木版挡住,当把竖直板迅速拿开的这一瞬间,小球获得的加速度为(A) sin θg (B) cos θg (C) cos θ g (D) sin θ g N ?gm ? Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. ,下列说法中正确的是(A) 只取决于刚体的质量,与质量的空间分布和轴的位置无关。(B) 取决于刚体的质量和质量的空间分布,与轴的位置无关。(C) 取决于刚体的质量、质量的空间分布和轴的位置。(D) 只取决于轴的位置,与刚体的质量和质量的空间分布无关。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 4. 在标准状态下,若氧气(视为刚性双原子分子的理想气体)和氦气的体积比 V 1 /V 2 =1/2 ,则其内能之比 E 1 /E 2为: (A)1/2. (B)5/3. (C)5/6. (D)3/10. Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. f(V) 的物理意义为: (A) 具有速率 V的分子占总分子数的百分比. (B) 速率分布在 V 附近的单位速率间隔的分子占总分子数的百分比. (C)