Mathematics

Mathematics, 14.10.2019 16:30, rpmgamer

The brightness of a star is called its absolute magnitude (m). the equation m = a + 5 - 5 log d is used to find the absolute magnitude of a star. a represents the apparent magnitude and d is the distance, measured in a unit called parsecs, from earth.

the absolute magnitude of a star is 0.45 and the apparent magnitude is 0.009, how far is the star from earth?

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Mathematics, 26.08.2019 23:00, sophiaroeloffs4348

Acepheid star is a type of variable star, which means its brightness is not constant. the relationship between the brightness of a cepheid star and its period, or length of its pulse, is given by m = –2.78(log p) – 1.35, where m is the absolute magnitude, or brightness, of the star, and p is the number of days required for the star to complete one cycle. what is the absolute magnitude of a star that has a period of 45 days? use a calculator. round your answer to the nearest hundredth.

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Mathematics, 20.11.2019 22:31, thonio091

Acepheid star is a type of variable star, which means its brightness is not constant. the relationship between the brightness of a cepheid star and its period, or length of its pulse, is given by m = –2.78(log p) – 1.35, where m is the absolute magnitude, or brightness, of the star, and p is the number of days required for the star to complete one cycle. what is the absolute magnitude of a star that has a period of 45 days? use a calculator. round your answer to the nearest hundredth.

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Mathematics, 29.11.2019 04:31, leslychavez0269

Algebra 1 grade 9. can anyone me answer this question? the brightness of a star is measured in magnitudes. the lower the magnitude, the brighter the star. a magnitude 9 star is 2.51 times as bright as a magnitude 10 star. a magnitude 8 star is 2.51 * 2.51 or (2.51)2 as bright as a magnitude 10 star. (note: 10 - 8 = 2. get it? ) a. how many times as bright is a magnitude 3 star as a magnitude 10 star? b. write an expression to compare a magnitude m star to a magnitude 10 star. c. a full moon is magnitude -13, approximately. does your expression make sense for this magnitude? explain.

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