Physics, 06.05.2020 05:35 brutalgitaffe

Astronomers believe that the radius of a variable star increases and decreases with the brightness of the star. The certain variable star has an average radius of 25 million miles and changes by a maximum of 1.5 million miles from this average during a single pulsation. The time between periods of maximum brightness is 5.4 days. Find an equation that describes the radius of this star as a function of time.

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Astronomers believe that the radius of a variable star increases and decreases with the brightness o...