英语翻译
问题描述：
英语翻译
5.The SI unit of mass is the kilogram.What is the SI unit of charge?
6.The proportionality constant k in Coulomb’s law is huge in ordinary units,whereas the proportionality constant G in Newton’s law of gravitation is tiny.What does this mean in terms of the relative strengths of these two forces?
7.Why does the weaker force of gravity dominate over electrical forces for astronomical objects?
答
unit of charge is coulomb.gravitational force is smaller7,not sure of the answer