Two cars collide and lock together on wet pavement, the coefficient of friction of tires on wet pavement is 0.250. Car 1 is 1310 kg and Car 2 is 1810 kg. Car 1 is traveling at 16.9 m/s and Car 2 is traveling at 22.4 m/s

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)