Help me with the following two questions about astronomy. Thank you drag-and-drop environment to put the...
Help me with the following two questions about astronomy.
Thank you
drag-and-drop environment to put the correct words in the right places. (Please Note: Not all draggable items will be u Draggable Items magnitude faintitude apparent brightness brighter Because distance causes light to spread out and get dimmer, astronomers need to distinguish between the total energy output of a star,...
Astronomy Ranking Task: Star Evolution & Lookback Time Exercise #1 Description: Imagine that the four stars...
Astronomy Ranking Task: Star Evolution & Lookback Time Exercise #1 Description: Imagine that the four stars listed below all became Main Sequence (MS) stars at exactly the same time 10 billion years ago but in different locations of the universe. Cosmo Star is an O spectral class star with a MS lifetime of 3 million years. Its life will eventually...
2. Which one of the following statements about measuring the mass of an isolated star (a...
2. Which one of the following statements about measuring the mass of an isolated star (a star that is not in a binary star system) is correct? a) the mass of the star can be measured accurately only if its luminosity and temperature can be measured b) the mass of the star cannot be measured accurately c) the mass of...
10. At the end of the Sun’s life it will use up the hydrogen and helium...
10. At the end of the Sun’s life it will use up the hydrogen and helium in its core and become a white dwarf. The Sun’s mass is 2.0 × 1030 kg, its radius is 7.0 × 105 km, and it has a rotational period of approximately 28 days. If the Sun should collapse into a white dwarf of radius...
choose correct answer. no explanation needed QUESTION 10 How do astrophysicists account for neutrino emission from...
choose correct answer. no explanation needed
QUESTION 10 How do astrophysicists account for neutrino emission from the Sun? Solar flares create neutrinos with very energetic magnetic fields. Convection releases neutrinos, which random walk through the radiation zone. Fission in the Sun's core creates neutrinos when protons turn into neutrons. The annihilation of positrons and electrons in the core produces neutrinos....
Astronomy Ranking Task: Stellar Evolution Exercise #2 Description: The figure below shows an H-R diagram with...
Astronomy Ranking Task: Stellar Evolution Exercise #2 Description: The figure below shows an H-R diagram with data points A-F that represent various stages in the "evolutionary path" for the lives of stars. Note that only stars B, D, and E are main sequence stars. • B Luminosity — C Black Dwarf - Temperature Ranking Instructions: Rank, from earliest to latest,...
Ty Lifetimes. Zero-age main sequence stars much less than 0.5Mo are the alternate form of "dark m...
ty Lifetimes. Zero-age main sequence stars much less than 0.5Mo are the alternate form of "dark matter". Assume a brown dwarf's luminosity derives from gravitational contraction alone. Its mass is 0.05 Mo, and its luminosity is 3 x 10-3Lo. Such stars maintain a tight correlation between radus and mass given by R 9 x 10 (M/Mo)-1em. If we assume that...
What is the reason for two stars to have the same brightness but one being 100...
What is the reason for two stars to have the same brightness but one being 100 times more luminous than the other? One of them is 100 times more distant One of them is 10 times more distant One of them is 1000 times more distant One of them is 4π times more distant The Brightness scale like the inverse...
For the following, quote your numerical answers to two significant figures: a) A binary system consists...
For the following, quote your numerical answers to two significant figures: a) A binary system consists of two stars orbiting a common center of mass. Star A is a white star of mass MA = 2.02Mo, where Mo = 1.989 x 1030 kg is the mass of the Sun. Its companion, Star B, is a white dwarf with mass Mg...
Neutron stars are created when giant stars die in supernovas and their remaining cores collapse to...
Neutron stars are created when giant stars die in supernovas and their remaining cores collapse to a state of immense density where protons and electrons combine to form neutrons. A neutron star is ~1.4 times as massive as the sun and has radius of only ~10 km. For this neutron star compute its escape velocity. What percentage of the speed...
Help me with the following two questions about astronomy.
Thank you
drag-and-drop environment to put the correct words in the right places. (Please Note: Not all draggable items will be u Draggable Items magnitude faintitude apparent brightness brighter Because distance causes light to spread out and get dimmer, astronomers need to distinguish between the total energy output of a star,...
Astronomy Ranking Task: Star Evolution & Lookback Time Exercise #1 Description: Imagine that the four stars listed below all became Main Sequence (MS) stars at exactly the same time 10 billion years ago but in different locations of the universe. Cosmo Star is an O spectral class star with a MS lifetime of 3 million years. Its life will eventually...
choose correct answer. no explanation needed
QUESTION 10 How do astrophysicists account for neutrino emission from the Sun? Solar flares create neutrinos with very energetic magnetic fields. Convection releases neutrinos, which random walk through the radiation zone. Fission in the Sun's core creates neutrinos when protons turn into neutrons. The annihilation of positrons and electrons in the core produces neutrinos....
Astronomy Ranking Task: Stellar Evolution Exercise #2 Description: The figure below shows an H-R diagram with data points A-F that represent various stages in the "evolutionary path" for the lives of stars. Note that only stars B, D, and E are main sequence stars. • B Luminosity — C Black Dwarf - Temperature Ranking Instructions: Rank, from earliest to latest,...
ty Lifetimes. Zero-age main sequence stars much less than 0.5Mo are the alternate form of "dark matter". Assume a brown dwarf's luminosity derives from gravitational contraction alone. Its mass is 0.05 Mo, and its luminosity is 3 x 10-3Lo. Such stars maintain a tight correlation between radus and mass given by R 9 x 10 (M/Mo)-1em. If we assume that...
For the following, quote your numerical answers to two significant figures: a) A binary system consists of two stars orbiting a common center of mass. Star A is a white star of mass MA = 2.02Mo, where Mo = 1.989 x 1030 kg is the mass of the Sun. Its companion, Star B, is a white dwarf with mass Mg...
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