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SATII物理专题分析 Power.

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  SAT考试是美国高中生进入美国大学的标准入学考试,包括SAT1和SAT2。SAT2是专项测验,有数学、物理、化学、生物、外语等,大部分为选择题,是可以选科的。今天我们来学习SATII物理专题分析 Power,希望对大家的复习有所帮助。

  Power is an important physical quantity that frequently, though not always, appears on SAT II Physics. Mechanical systems, such as engines, are not limited by the amount of work they can do, but rather by the rate at which they can perform the work. Power, P, is dined as the rate at which work is done, or the rate at which energy is transformed. The formula for average power is:

  

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