Cepheids can be used to calculate distance by:
adding absolute and apparent magnitude
finding the difference between absolute and apparent magnitude
measuring parallax angles
dividing radial velocity by distance
cepheids:
brighten and dim periodically
can be used to measure stellar distance
have been discovered in galaxies other than our own
all of the above
absolute magnitude
is how bright a star appears from earth
depends on luminosity and distance
is a measure of a star's actual brightness
is usually the same as apparent magnitude
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Did the writers of the declaration of independence accomplish their goals (did we get our independence and the new government we wrote about)?

In some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of a postzygotic barrier the founder effect sympatric speciation a prezygotic barrier

U.s. history 1.documentary analysis what steps did taylor’s family take to prepare her freedom