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O_o Rion
Questions (5)
(a) From the absorption lines, we were able to determine that the star (phi)-Fictus has spectral classification F7V and color
2 answers
511 views
Integral of x sq/(1+x sq) dx
I am not sure how to do this, am i supposed to do partial fractions to break it up? Or is it just
2 answers
461 views
If stars should always be visible, where should you be located on earth?
Can I answer this considering the celestial sphere and
2 answers
430 views
Hi.
In an integration solution, the integral of (1/(sqrt (8-u squared)) is written as arcsin(u/sqrt 8), but I don't see how they
2 answers
1,139 views
Silly question here, but I am not getting a certain part in the solution in a problem.
Evaluate the integral of
2 answers
463 views
Answers (4)
Well it's definitely a main sequence star since it's F7V (V--> main sequence, right?) but I'm a bit confused about how to find the luminosity (and thus the absolute magnitude) from the b-v index, all the H-R diagrams in our book are luminosity vs surface
But how did you get Integral of x sq/(1+x sq) dx = integral (1/2)u^(1/2) du du= 2xdx, from there i got, integral xsq/(1+x) dx = (1/2) integral[ (sqrt (1-u))/u ]du Did i do anything wrong?
Thanks!
Ohhh yeah! Got it! Thanks!
