What is the mechanical advantage of a pulley system

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.