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The orbital period of the binary system containing A0620-00 is 0.32 day, and Doppler shift measurements reveal that the radial velocity of the X-ray source peaks at 457 km/s (about 1 million miles per hour). (a) Assuming that the orbit of the X-ray source is a circle, find the radius of its orbit in kilometers. (b) By using Newton's form of Kepler's third law, prove that the mass of the X-ray source must be at least 3.1 times the mass of the Sun.(hint: Assume that the mass of the K5V visible star--about 0.5 M solar from the mass-luminosity relationship--is negligible compared to that of the invisible companion.)
Marnie is a nursing student, currently studying pregnancy. Her husband hears her pacing in her study mumbling, “Ectoderm, mesoderm, endoderm, ectoderm, mesoderm, endoderm…” What is Marnie apparently studying?
Under what conditions would you use parametric and nonparametric tests? Considering your answer, which types of statistical analyses are more frequently used in epidemiology?
Describe a definition of journalistic integrity. Examine policy guidelines for journalistic integrity utilizing the internet. Draft a policy guideline that you believe is important for practitioners in this field.
Give examples of how humans have increased their food supply and what effects these methods have on the environment overall.
I am undergoing treatment for anxiety why was I prescribed alprazolam. How is it supposed to help?
Discuss, compare and contrast two theoretical approaches of Dream Interpretation and discuss research that supports or refutes each theory.
The federal Age Discrimination in Employment Act (ADEA) protects employees 40 years of age and older from age discrimination. Some states have state laws that protect younger workers, too. What do you think of the ADEA?
Nutrition also plays a role in determining our psychological condition. Describe one way that you can learn more about the nutritional impact of your food choices.
Women won the right to vote with the ratification of what Amendment?
How are soil texture, parent material, and weathering related? What factors are needed for best soil and plant growth? What is soil erosion and soil desertification, and how does each one happen?
You might theorize that how people cope with conflict is influenced by their physical state. You generate the hypothesis that hungry people will be more likely to engage in conflict than people who aren't hungry. Describe a repeated measures exper..
How does the rhythm of the sanjuan tradition compare with that of Chinese Jiangnan sizhu? Cite relevant examples.
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