c. more
b. the same number of
d. no
Answer:
The answer is A: Fewer.
Explanation:
In a binary system with a main-sequence star and a brown dwarf, we can determine their masses by analyzing their radial velocity curve and measuring the Doppler shifts of their spectral lines. Kepler's law can then be used to calculate the sum of their masses.
The question is about a binary system containing a main-sequence star and a brown dwarf. We can determine the masses of the stars in a spectroscopic binary by analyzing their radial velocity curve. By measuring the Doppler shifts of the spectral lines, we can calculate the orbital speed of each star and use Kepler's law to calculate the sum of their masses.
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The orbital speed and separation of a binary system composed of a main-sequence star and a brown dwarf can be utilized to infer their respective masses. This is accomplished by studying the Doppler effect from the spectral lines of the system and applying Kepler's third law. Greater mass is found to exhibit slower orbital speed.
The main-sequence star and the brown dwarf form a binary system with an orbital period of 1 year and an average separation of 1 Astronomical Unit (AU). The Doppler shifts of the spectral lines from the main-sequence star and the brown dwarf indicate that the orbital speed of the brown dwarf in the system is 22 times greater than that of the main-sequence star.
We can estimate the masses of the stars in this binary system using the formula based on Newton's reformulation of Kepler's third law: D³ = (M₁ + M₂)P², where D represents the semimajor axis in AU and P represent the period in years. From this, we can calculate the sum of the masses of the two stars. Given the difference in orbital speeds, the main-sequence star has a higher mass to result in a slower speed, and the brown dwarf has a smaller mass to result in the higher speed.
In conclusion, by analyzing the radial velocity curve and using Kepler's third law, we can estimate the masses of the stars in a binary system.
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advantages
1.Less flooding
2.Less erosion
3.Return of natural ecosystems
disadvantages
1. People go hungry
2. People don't get the water they want
3. People don't get the land they want for homes
Human activities can increase the carrying capacity of the environment but can also cause environmental degradation and potential decrease in carrying capacity.
Human activities can have both advantages and disadvantages in terms of reducing their impact on the environment. One advantage is that development of food production methods and high-quality shelters can increase the carrying capacity of the environment, allowing more people to live. However, these technologies can also lead to environmental degradation, such as air pollution, water contamination, habitat loss, and climate change. The negative effects of increasing carrying capacity may even outweigh the positive ones, potentially decreasing the world's carrying capacity for human beings.
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Characteristics of climate?
Explanation: