物理估算,指的是运用一定的物理方法和近似计算的方法,以物理概念和物理规律为基础,依据一些物理常量和生活的经验常识,对所求的物理量进行大致的数据范围或数量级的推算.这类题型常采用近似的手段简化求解过程来求得所需要的结果,往往知识面覆盖广,题目灵活,文字较为简洁,条件较为隐蔽,并 Physical estimation refers to the use of certain physical methods and approximate calculation methods. Based on physical concepts and physical laws, based on some physical constants and life experience common sense, the approximate physical range or magnitude of the calculated physical quantities is estimated. Such problem types often use approximate means to simplify the solution process to obtain the desired results, often cover a wide range of knowledge, the subject is flexible, the text is more concise, the conditions are more subtle, and