级大学物理试卷第一学期A.doc

暨 南 大 学 考 试 试 卷 教 师 填 写 2009- 2010 学年度第____一_____学期 课程名称：_________大学物理______________ 授课教师姓名：___________黄波____________ 考试时间:___2010__年____1___月___19___日 课程类别 必修[ √ ] 选修[ ] 考试方式 开卷[ ] 闭卷[ √ ] 试卷类别(A、B) [ A ] 共 页 考 生 填 写 学院(校) 专业 班(级) 姓名 学号 内招[ ] 外招[ ] 题 号 一 二 三 四 五 六 七 八 九 十 总 分 得 分 得分 评阅人 一、基础知识题（共4小题，每小题9分，共36分） 1、A rectangular parallelepiped has dimensions a, b, and c, as in Figure 1. (a) Obtain a vector expression for the face diagonal vector R1. (b) Obtain a vector expression for the body diagonal vector R2. Use vectors to compute the angle between R1 and R2 (=?). 2、A particle starts from rest and accelerates as shown in Figure 2. Determine (a) the particle’s speed at t =10.0 s and at t =20.s,and (b) the distance traveled in the ?rst 20.0s. 3、 A bar of gold is in thermal contact with a bar of silver of the same length and area (Figure 3). One end of the compound bar is maintained at 80.0℃ while the opposite end is at 30.0℃. When the energy transfer reaches steady state, what is the temperature at the junction? （The thermal conductivities of gold and silver are 314 W/(m℃) and 427 W/(m℃), respectively） 4、What horizontal force must be applied to the cart shown in Figure 4 in order that the blocks remain stationary relative to the cart? Assume all surfaces, wheels, and pulley are frictionless. 得分 评阅人 二、计算题（共3小题，共40分） 5、A sample of ideal gas is expanded to twice its original volume of 1.00 m3 in a quasi static process for which P=aV2 , with a=5.00 atm/m6, as shown in Figure 5. How much work is done on the expanding gas? （13分） . 6、Two blocks, as shown in Figure 6, are connected by a string passing over a pulley of radius 0.250 m and moment of inertia I. Assuming the mass of the string can be negligible and the string doesn’t slip. The block on the frictionless incline is moving up with a constant acc