Chemistry
Chemistry, 27.07.2019 21:00, maryalice2002

As a star increases in brightness, which value becomes smaller? a. density b. magnitude c. temperature d. luminosity

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Physics, 01.07.2019 14:50, jamarcusweverjr1133
Avariable star is one whose brightness alternately increases and decreases. for one such star, the time between periods of maximum brightness is 5.7 days, the average brightness (or magnitude) of the star is 4.2, and its brightness varies by ±0.25 magnitude. find a function that models the brightness of the star as a function of time (in days), t. (assume that at t = 0 the brightness of the star is 4.2 and that it is increasing.)
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Chemistry, 27.07.2019 21:00, theoriginalstal4234
As a star increases in brightness, which value becomes smaller? a. density b. magnitude c. temperature d. luminosity
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Physics, 29.07.2019 14:20, yesimabadbih5147
5questions for 25 points don't answer the questions if you don't know it. all of the elements, except for hydrogen and helium, originated from the life and death of a a- galaxy b- planet c- moon d- star a main sequence star (such as our sun) is in a state of a- collapse b- equilibrium c- rapid expansion temperature affects a star’s color. the hottest stars appear to be what color? a- red b- yellow c- blue d- pink what determines the life cycle of a star? a- the temperature of the star. b- the luminosity of the star. c- the mass of the star. d- the color of the star. there are billions of stars in the universe. how are they classified? a- by their temperature and luminosity b- by their color and luminosity c- by they size and shape d- by their shape and brightness
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