Flail Chest (Definition) Flail chest is a life threatening medical condition in which multiple segments of the rib cage have been broken and are loosened. These segments cause severe bruising and damage to the lung. ...Read more.
The Milky Way is the second-largest galaxy in the Local Group, with its stellar disk approximately 100,000 ly (30 kpc) in diameter, and, on average, approximately 1,000 ly (0.3 kpc) thick.
RE: What is the appoximate physical diameter in light-years in this problem? A globular cluster of stars is measured to have an angular diameter of 20.6 arcseconds, and its distance from the Earth is measured to be 200,000 light-years?A) 200,000 ly B) 20 ly C) 2 ly D) 1/20 ly. just now. Report Abuse. Anything has an angular diameter of 1 degree at a distance of about 57.3 times its diameter, and in inverse proportion, so 1 minute (= 60 seconds) at 3440 times, so 20.6 seconds at almost exactly 10000 times. The correct answer is B.