Ireally do not understand. you have 2 cubes (cube a and cube b) that are the exact same size. the only thing that is different about them is their densities. cube a has a density of 1.44 g / cm3, while cube b has a density of 2.37 g / cm3. how is it possible that the blocks have different densities even though they are the exact same size? someone me.

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm