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# 2017年6月SAT2物理考试总结

2017-07-24 16:40:13 来源：网络SAT资料下载

新东方在线SAT频道为大家带来2017年6月SAT2物理考试总结一文，希望对大家SAT备考有所帮助。更多精彩尽请关注新东方在线SAT频道!

2017年6月SAT2物理考试总结

1、相对于历次考试和今年新发布的OG样卷而言，本次物理考试难度较低，因此满分容错率也可预见地不会有10题之高。考试内容分布较为均匀，对运动力学，电磁学，波和光学，热学和近代物理 (包括狭义相对论) 都有涉及。

2、稍微冷门的考点是较少见的基本粒子 (中微子, 阳电子) 和超新星等概念。

中微子 (neutrino)： 质量微小, 呈电中性, 是目前唯一探测到的暗物质。

阳电子 (positron)：电子的反粒子, 质量和电子相同，带有1个基本单位的正电荷. 是反物质的一种。

超新星 (supernova)：恒星在演化接近末期时的剧烈爆炸，极其明亮，但维持时间只有短短几周至数月。

3、难题范例：

1.

The graph above describes the Temperature versus Time of the substance X and Y respectively when heating them. The initial phase of them is solid and they have the same mass. The initial Temperature is both . And the rate of heating is equal.

A. It is greater for X than for Y

B. It is less for X than for Y

C. It is equal for X and Y

D. It can’t be determined without knowing the initial temperature

E. It can’t be determined without knowing the masses of X and Y

1) Which of the above statements can be concluded for the melting temperature of X compared to Y.

2) Which of the above statements can be concluded for the total heat of melting from solid of X compared to Y.

3) Which of the above statements can be concluded for the specific heat of X compared to Y.

2.

An object is fastening at the end of a rigid string and moves along a circle on the frictionless level tablet. The graph following is shown from top view.

1) Suppose that the velocity of the object is constant. Which of the following statements about the centripetal acceleration and tangential acceleration of the object when it is shown on the graph can be concluded?

A. 0; 0

B. 0; towards right

C. 0; towards bottom of the page

D. towards right; 0

E. towards bottom of the page; 0

2) Suppose that the velocity of the object is increasing. Which of the following statements about the centripetal acceleration and tangential acceleration of the object when it is shown on the graph can be concluded?

A. towards right; towards bottom of the page

B. towards right; towards up of the page

C. towards left; towards up of the page

D. towards bottom of the page; towards right

E. towards bottom of the page; towards left

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