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第一卷 一、(30分)每小题2分。把答案填写在题中横线空白处,不要求写出演算过程。 1.某原子直径为1.0×1~(-10)米,一张纸的厚度为1.0×10(-4)米,那么需要有____个原子一个挨一个地排列起来,才有一张纸那么厚。 2.某物体受两个力作用,这两个力的大小,方向和作用点完全相同,则这两个力一定____平衡力。(填“是”或“不是”) 3.子弹离开枪口仍能继续前进,这是由于子弹具有____这种性质。
Volume One I. (30 points) 2 points for each question. Fill in the answers in the blank line of the question and do not ask for the calculation process. 1. The diameter of an atom is 1.0×10 -10 meters, and the thickness of a piece of paper is 1.0×10 (-4) meters. Then there must be ____ atoms arranged one by one to have a piece of paper. So thick. 2. When an object is subjected to two forces, the magnitude, direction and point of action of these two forces are exactly the same, then these two forces must balance the force. (“Yes” or “No”) 3. The bullet can continue to move away from the muzzle. This is because the bullet has a ____ character.