“force”的概念、定义、习题解题方法及翻译-物理辞典

单词	force
释义	force Symbol F. The agency that tends to change the momentum of a massive body, defined as being proportional to the rate of increase of momentum. For a body of mass m travelling at a velocity v, the momentum is mv. In any coherent system of units the force is therefore given by F = d(mv)/dt . If the mass is constant F = mdv/dt = ma , where a is the acceleration (see Newton's laws of motion). The SI unit of force is the newton. Forces occur always in equal and opposite action-reaction pairs between bodies, though it is often convenient to think of one body being in a force field
随便看	red giant redshift reflectance reflecting telescope reflection refracting telescope refraction refractive index refractivity refractometer refractory refrigerant refrigeration Regnault's method regression analysis relative aperture relative atomic mass relative density relative humidity relative molecular mass relative permeability relative permittivity relativistic mass relativistic mechanics relativistic quantum theory

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。