Listed following are several fictitious stars with their luminosities given in terms of the Sun's luminosity (LSun) and their distances from Earth given in light-years (ly). Rank the stars based on how bright each would appear in the sky as seen from Earth, from brightest to dimmest. If two (or more) stars have the same brightness in the sky, show this equality by dragging one star on top of the other (s). NismoShelby/FerdinandEnzoLotus

Question

Geography

Nyla Cabrera

16 June, 03:31

Listed following are several fictitious stars with their luminosities given in terms of the Sun's luminosity (LSun) and their distances from Earth given in light-years (ly). Rank the stars based on how bright each would appear in the sky as seen from Earth, from brightest to dimmest. If two (or more) stars have the same brightness in the sky, show this equality by dragging one star on top of the other (s). NismoShelby/FerdinandEnzoLotus

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Nola Ware · Answer 1

Brightest: Nismo, then (overlapping because they're the same) Shelby and Ferdinand, then Enzo, then Lotus (dimmest)

Explanation:

The star named Nismo is clearly brighter than the Shelby, due to it has a same luminosity but is nearer to us. The Enzo is twice as bright and is twice as far than the Shelby. The inverse square law for light tells us that doubling distance makes an object four times as dim, thus Enzo is dimmer than Shelby. As Lotus has twice the luminosity and twice the distance of Enzo, The Ferdinand is about four times as luminosity and is twice the distance of the Shelby.