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一.考察“双基”是永恒的主题例题1(2013福州)据报道,我国长征二号F运载火箭将于6月中旬把神舟十号飞船送入太空.火箭在上升过程中,其头部表面温度将会急剧升高,请你用所学物理知识解释这是为什么?考点:做功改变物体内能。专题:分子热运动、内能。解析:内能的改变有两种方式:做功和热传递。答:火箭在上升过程中,需要克服空气摩擦力做功,使火箭头部表面的内能增加,温度升高。
It is reported that China’s Long March II F launch vehicle will be put into space in mid-June by the Shenzhou-10 spacecraft. During the ascent of the rocket, its Head surface temperature will be sharply increased, please use the knowledge of physics to explain why this is the? Test sites: work to change the energy inside the object. Feature: Molecular heat movement, internal energy. Analysis: The internal energy changes in two ways: work and heat transfer. A: During the ascent of a rocket, it is necessary to overcome the frictional force of the air so that the internal energy of the surface of the rocket head increases and the temperature increases.