What are the most prominent absorption lines you would expect to find in the spectrum of...
What are the most prominent absorption lines you would expect to find in the spectrum of a star with a surface temperature of (a) 35,000 K, (b) 2800 K, and (c) 5800 K (like the Sun?) Briefly describe why these stars have such different spectra even though they have essentially the same chemical composition.
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What are the most prominent absorption lines you would expect to
find in the spectrum of...
an absorption Tine Spectrum Question 4 Spectra can be used to measure what properties of a...
an absorption Tine Spectrum Question 4 Spectra can be used to measure what properties of a star? Radial velocity chemical composition Surface temperature O All of the above None of the above MacBook Air
1.What process is pushing back against gravity in the very center (the core) of sun-like stars?...
1.What process is pushing back against gravity in the very center (the core) of sun-like stars? 2."... the length of time a star spends on the main sequence is determined almost entirely by its mass with the counterintuitive result that less massive stars live longer." What is the fundamental reason why massive stars live a much shorter time than the Sun, even though they might have 30 times as much mass – and thus more fuel – available? 3.The text...
When you hold up a piece of white notebook paper in sunlight, what color does the...
When you hold up a piece of white notebook paper in sunlight, what color does the paper appear? Explain with reference to the thermal spectrum of the Sun A very hot star may have a temperature of 25.000 K. What is the peak wavelength of the spectrum of this star, and what kind of light is this? Does this very hot star emit light at wavelengths other than the peak wavelength? Explain with reference to its thermal spectrum What color...
are very likely to observe more lines than what you expect from a pure hydrogen gas...
are very likely to observe more lines than what you expect from a pure hydrogen gas emission spectrum. Additionally, hydrogen, being the smallest atom, can also leak out the gas tube, weakening the signal. You should look for the expected lines and ignore the lines from contaminants. Element: Hydrogen Color Measured Wavelength (nm) Expected Wavelength (nm) Matching? (Approximately) There are several additional elemental gas tubes set around the room for you to observe. Choose two. Use your handheld spectrometer and...
When rubidium ions are heated to a high temperature, two lines are observed in its line...
When rubidium ions are heated to a high temperature, two lines are observed in its line spectrum at wavelengths (a) 7.67 x 10-7 m and (b) 3.99 x 10-7 m. What are the frequencies of the two lines? What color are the lines? Choose the answer that best completes the following: The existence of atomic line spectra indicates that. . . the energy of a photon depends on its frequency. all orbitals in s subshells must be spherical in shape....
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
General Electric. Enron. Not two companies that you would expect to be mentioned in the same...
General Electric. Enron. Not two companies that you would expect to be mentioned in the same breath. After all, General Electric is repeatedly in the top of Fortune magazine's "Most Admired” companies, and Enron will go down in history as one of the greatest failures and financial scandals in U.S. corporate history. So why would we mention both of these firms together? Because the fact is that throughout the 1990s and into the early 2000s, these companies actually approached their...
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab...
can
someone help me find this information?
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab to determine the identity of the polymer samples 2. Describe the density test. What observation will help you determine the density of each polymer? What precautions should be taken in placing the sample in the solutions? 3. Write the name and abbreviation for the six recyclable polymers 2 huetn deisity polyetayene.HDpz poulene: PP 4. Given the list of wavenumber...
please help Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis...
please help
Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis In the interior of an old forest a low number of K-type species dominate the community Species evenness is larger when disturbances are extremely frequent Species richness increases immediately after a disturbance such as a fire, but may decrease later In beach dune environments, a low number of r-type species dominate the community Question 24 (1 point) Some birds follow moving swarms of army...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
an absorption Tine Spectrum Question 4 Spectra can be used to measure what properties of a star? Radial velocity chemical composition Surface temperature O All of the above None of the above MacBook Air
When you hold up a piece of white notebook paper in sunlight, what color does the paper appear? Explain with reference to the thermal spectrum of the Sun A very hot star may have a temperature of 25.000 K. What is the peak wavelength of the spectrum of this star, and what kind of light is this? Does this very hot star emit light at wavelengths other than the peak wavelength? Explain with reference to its thermal spectrum What color...
are very likely to observe more lines than what you expect from a pure hydrogen gas emission spectrum. Additionally, hydrogen, being the smallest atom, can also leak out the gas tube, weakening the signal. You should look for the expected lines and ignore the lines from contaminants. Element: Hydrogen Color Measured Wavelength (nm) Expected Wavelength (nm) Matching? (Approximately) There are several additional elemental gas tubes set around the room for you to observe. Choose two. Use your handheld spectrometer and...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
can
someone help me find this information?
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab to determine the identity of the polymer samples 2. Describe the density test. What observation will help you determine the density of each polymer? What precautions should be taken in placing the sample in the solutions? 3. Write the name and abbreviation for the six recyclable polymers 2 huetn deisity polyetayene.HDpz poulene: PP 4. Given the list of wavenumber...
please help
Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis In the interior of an old forest a low number of K-type species dominate the community Species evenness is larger when disturbances are extremely frequent Species richness increases immediately after a disturbance such as a fire, but may decrease later In beach dune environments, a low number of r-type species dominate the community Question 24 (1 point) Some birds follow moving swarms of army...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
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