Mathematics, 15.04.2020 23:35 bee171
The magnitude M of a star is a measure of how bright a star appears to the human eye. It is defined by
M = -2.5 log(B/Bâ‚€),
where B is the actual brightness of the star and Bâ‚€ is a constant.
(a) Expand the right-hand side of the equation.
(b) Betelgeuse is about 100 times brighter than Albiero. Use part (a) to show that Betelgeuse is 5 magnitudes less bright than Albiero. Let B1 be the brightness of the star Albiero and M1 be its magnitude.
Then 100B1 is the brightness of Betelgeuse, and its magnitude is .
Answers: 3
Mathematics, 21.06.2019 17:00
Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2
Answers: 3
Mathematics, 21.06.2019 23:00
In an equilateral triangle, each angle is represented by 5y+3. what is the value of y? a. 9.7 b. 10.8 c. 11.4 d. 7.2
Answers: 1
Mathematics, 21.06.2019 23:40
30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.
Answers: 1
The magnitude M of a star is a measure of how bright a star appears to the human eye. It is defined...
Mathematics, 11.02.2020 01:55
French, 11.02.2020 01:55
Social Studies, 11.02.2020 01:55
Computers and Technology, 11.02.2020 01:55
Computers and Technology, 11.02.2020 01:55
Mathematics, 11.02.2020 01:55
History, 11.02.2020 01:55
Social Studies, 11.02.2020 01:55