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I. Choose the Correct Answer 1. An object is moving along the x axis with position as a function of time given by x=x(). Point is at x 0. The object is definitely moving toward O when
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A reference frame consists(1)a coordinate system and(2)a set of synchronized clocks distributed throughout the coordinate grid and rest with respect to it
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Electrical Potential Ener and Electric Potentia 17.1 Electrical potential energy and electric potential 1. Electric force is conservative force Coulomb's force:
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Electric Fields 918.1 Conductors in electric field 1. Conductors A conductor is a material in which the electrons at the outer periphery of an atom have no great affinity for any particular individual
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1. The discovery of electrification OThe phenomenon of electrification Glass rod is rubbed with silk-positive Amber rod is rubbed with fur--negative
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The gravitational force 2. Newtons law of universal gravitation
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The causes of acceleration of a system--The first law of motion states that zero total force exists when the system has a constant velocity; a nonzero total force on the system causes its acceleration
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I. Choose the Correct Answer 1. A particle on a spring executes simple harmonic motion. If the mass of the particle and the amplitude are both doubled then the period of oscillation will change by a factor of
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一、醛酮的分类和命名 二、醛酮的结构 三、醛酮的物理性质 四、醛酮的化学性质
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一、结构 二、分类和命名 三、物理性质 四、形成yang盐 五、C—O 键的断裂 六、醚的自动氧化 七、1,2-环氧化合物的开环反应
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