皮皮学，免费搜题
登录
搜题
【简答题】
小通过一个实验,来验证力的三要素对力的作用效果的影响,如图所示,用力拉住一根锯条( F 1= F 3= F 4> F 2),使其发生(a)(b)(c)(d)所示四种形变。 (1)能说明力的作用效果跟力的大小有是图__________和图__________。 (2)能说明力的作用效果跟力的方向有是图__________和图__________。 (3)能说明力的作用效果跟力的作用点有是图__________和图__________。 (4)在上述(a)与(c)图中,控制力的____________和____________相同,研究________________与____________之间的关系,这种研究问题的方法,在物理学上叫做____________法。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】You m____listen to teacher in class. I will,Mom. My father usually reads n_____in the morning. He wants to know some news. Susan is crying because she can't find her w______.There is a lot of money i...
【简答题】Please allow me to ______ myself.
【单选题】My father ______ newspapers every day. He knows the latest news. [ ]
A.
reads
B.
watches
C.
sees
D.
looks at
【简答题】阅读理解。 My grandfather never watched TV. He thought that people spent too much time watching it. Some of his friends often talked about sports shows, the movies and plays. My grandfather said to himself...
相关题目：