论文部分内容阅读
掌握特征量的估算,往往是研究一个物理问题时登堂入室的关键.2011年全国高考理综新课程卷第19题,是一道估算题.下面对该题的解法进行探究,并从命题的角度进行评价.题目.卫星电话信号需要通过地球同步卫星传送.如果你与学生在地面上用卫星电话通话,则从你发出信号至对方接收到信号所需最短时间最接近于(可能用到的数
To master the estimation of the characteristic quantity, it is often the key when studying a physical problem to go to church to enter the room .In 2011 National College Entrance Examination rehearsal new curriculum volume 19 questions, is an estimation problem .To explore the solution of the problem, and from the perspective of proposition Subjects: Satellite telephony signals need to be transmitted through geostationary satellites If you are talking to a student on the ground using a satellite phone, the minimum time from when you signal to when the other receives the signal is the closest (possible number