A block with mass of 500kg is being pulled by a cable that is set an angle of 12 degrees above the horizontal.If the coefficient of static friction is 1.42 and the coefficient of kinetic friction is 0.76,what is the tension in the cable just before t

A bullet of mass m traveling at velocity v strikes a lock of mass 2m that is attached to a rod of length R.The bellet collides with the block at a right angle and gets stuck in the block.The rod is free to rotate.What is the centripetal acceleration Block A has a mass of 3 kg and Block B has a mass of 5 kg.Just before colliding,Block A has a speed of 4 m/s and Block B is at rest(0m/s).After the collision,Block B has a speed of 3m/s in the same direction that Block A was initially.What is the spe 7.As shown above,a ball of mass m,suspended on the end of a wire,is released from height h and collideselastically,when it is at its lowest point,with a block of mass 2m at rest ona frictionless surface.After the collision,the ball rises to a final h A block with mass of 500kg is being pulled by a cable that is set an angle of 12 degrees above the horizontal.If the coefficient of static friction is 1.42 and the coefficient of kinetic friction is 0.76,what is the tension in the cable just before t The atomic mass of copper is 63.55 amu.There are onlytwo isotopes of copper,63Cu with a mass of 62.93 amu and65Cu with a mass of 64.93 amu.What is the percentageabundance of each of these two isotopes? 第二道!紧急A block of mass m = 2.0 kg is held in equilibrium on an incline of angle θ = 60° by the horizontal force FDetermine the normal force exerted by the incline on the block the mass of 与 a mass of 有啥区别? find the empirical formulae of a compound with composition 46.7% silicon and 53.3% oxygen by mass mass的用法the mass of 和 a mass of 有什么区别？ a mass of =masses of吗? the roof of a block of a mass of 的近义词和词性 a mass of是什么意思及用法 翻译：A neutron is a nuclear particle with an atomic mass of 2.0 and a neutral electrical charge. 麻烦翻译：There is a book café with a cool interior on the corner of the next block. The mass of a grade A steel cylinder manufactured in a factory follows a normal distribution with mThe mass of a grade A steel cylinder manufactured in a factory follows a normal distribution with mean 2.2 kg and standard deviation 250 g.The mass of a mass The relative atomic mass scale makes it possible to know how many atoms of an element are element接上面 are present in a sample of the element with a measurable mass.这句话的句子成分怎么划分啊?