The upper end of a 3.80-m-long steel wire is fastened to the ceiling, and a 54.0-kg object is suspended from the lower end of the wire. You observe that it takes a transverse pulse 0.0492 s to travel from the bottom to the top of the wire. What is the mass of the wire?
From Atoms to Galaxies: Lecture 4 (1-20-16) From last time: -Scientific method -Pseudoscience (How can we tell) -Structure of science (Chemistry, Biology, Physics, etc) -The first science is Astronomy Today: Astronomy The Night Sky (one of the first places scientific inquiry came into play) -The movement of the stars, planets, our sun, were critical for survival for our ancestors -Because of the necessity to predict seasons, astronomy is considered the first science -Ancient observers (i.e., Myans): physical events are quantifiable and therefore predictable Stonehenge: -Started 2400-2200 BC, but they were built by many people (i.e. druids and others) -Current understanding of Stonehenge: Marks the passage of time (seasons) -Also burial site, religious site,