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
!

Because of the housing bubble, many houses are now selling for much less than their selling price just two to three years ago. there is evidence that homeowners with virtually identical houses tend to ask for more if they paid more for the house. what fallacy are they making?

Ageneral requirement for informed consent is that no informed consent may include any exculpatory language. exculpatory language is that which waives or appears to waive any of the subject’s legal rights or releases or appears to release those conducting the research from liability for negligence. which of the following statements in a consent form is an example of exculpatory language? taking part in the research is voluntary, but if you choose to take part, you waive the right to legal redress for any research-related injuries.your participation in this research is voluntary. if you choose not to participate, or change your mind later, your decision will not affect your relationship with the researcher or your right to other services that you may be eligible for.in the event of any distress you may have related to this research, you will be given access to appropriate resources.the researcher may stop you from taking part in this research without your consent if you experience side effects that make your emotional condition worse. if you become too emotionally distressed during the research, you may have to drop out.

Marcus wants to overcome his internalized racism. which action will him do so?