一道关于机械波的物理题A rope is stretched with a tension of 234 N.The rope is of length 10.6 m with a mass of 146 g.Two pulses are formed at opposite ends of the rope,separated in time by 40.0 ms.Determine how far from the farther end of t

一道关于机械波的物理题A rope is stretched with a tension of 234 N.The rope is of length 10.6 m with a mass of 146 g.Two pulses are formed at opposite ends of the rope,separated in time by 40.0 ms.Determine how far from the farther end of t 关于机械波的一道物理题A相隔一个周期的两个时刻简谐波的图像相同B如图. 麻烦帮解一道英文版物理题A box of mass 2kg is pulled up a rough plane face by means of a light rope.The plane is inclined at an angle 20°to the horizontal,as shown in the figure.The tension in the rope is 18N .The coefficient of friction 一道关于大气压的物理题. 一道关于浮力的物理题 关于电路的一道物理题. 一道关于压强的物理题 一道物理题关于功的 关于电荷的一道物理题 关于LED的一道物理题. 一道关于力矩的物理题 关于机械能的一道物理题 一道关于动量的物理题 英文的物理题A certain rope has a length of 8m and a mass of 1.6kg.It is fixed on one end and held fixed at the other with a tension of 50N.What is the speed of waves on this rope? 关于机械波干涉的问题 一道初三的关于压强的物理题 机械振动与机械波物理题, 一道机械波的物理题如果波向正方相传,那么a点和c点的振动方向是向哪里的?怎么看?我知道在t=0时图乙的振动方向是向上的.