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SAT2物理練習題

2013-04-23 00:00     供稿單位: 互聯網    

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      今天新航道SAT頻道小編為大家整理了SAT物理練習題,供大家參考,以下是詳細內容。

 

  1.Which of the following is a description of the image is always generated by the diverging lens?

  A virtual

  II. Erected

  III. Smaller than the object

  (A) I only

  (B) three

  (C) I and II only

  (D) II and III

  (E) I, II and III

  2. Two balls rolling friction surface, as shown above. The balls have the same mass and travel at the same speed. If the ball is met in a perfectly elastic collision, unless the following conditions:

  (A) kinetic energy conservation

  (B) the mass of the system remain unchanged

  (C) the ball will have a different degree of acceleration

  (D) the ball will have the same momentum before the collision

  (E) The ball will have the same momentum after collision

  3. The first law of thermodynamics covers the following ideas, in addition to:

  (A) energy conservation

  (B) energy can not be created or destroyed

  (C) the energy may be converted into different forms

  (D) the likelihood of the process

  (E) the difference between the change of internal energy of a system is equal to the heat absorbed by the system

  Explanation

  1. The correct answer is (E).

  The image generated by the diverging lens having the same characteristics: virtual, upright, smaller than the object.

  2. The correct answer is (C).

  In a completely elastic collision, kinetic energy is conserved. Momentum (p) is defined by the following formula:

  P = MV

  Therefore, if the quality and speed of each ball is the same:

  M1 V1 = square meters

  However, since each ball, there is a constant speed, the acceleration of each ball is zero.

  3. The correct answer is (D).

  The first law of thermodynamics is not resolved to the spontaneity of the given process.

     以上是新航道SAT頻道小編為大家整理的SAT物理練習題,希望對大家有幫助,更多資訊、資料請訪問新航道SAT頻道http://www.mehkj.com.cn/sat/

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