Physics, 08.08.2019 22:10 krystalhurst97
The text says a star does not change its mass very much during the course of its main-sequence lifetime. while it is on the main sequence, a star converts about 10% of the hydrogen initially present into helium (remember it’s only the core of the star that is hot enough for fusion). look in earlier chapters to find out what percentage of the hydrogen mass involved in fusion is lost because it is converted to energy. by how much does the mass of the whole star change as a result of fusion? were we correct to say that the mass of a star does not change significantly while it is on the main sequence?
Answers: 2
Physics, 21.06.2019 16:10
Zirconium has an hcp crystal structure and a density of 6.51 g/cm3. (a) what is the volume of its unit cell in m3? (b) if the c/a ratio is 1.593, compute the values of c and a.
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Physics, 21.06.2019 23:30
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Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.
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According to newton’s first law of motion, which force is expected to cause a body to accelerate?
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The text says a star does not change its mass very much during the course of its main-sequence lifet...
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