Calculate the Jeans mass for the dense core of a giant molecular cloud with the following...
Calculate the Jeans mass for the dense core of a giant molecular cloud with the following properties: T = 100K, nH2 = 107 m-3, rho = 3x10-20 kg m-3, and mu = 2.
If the typical mass in dense regions is ~10 M⦿, will the cloud be able to gravitationally collapse?
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Calculate the Jeans mass for the dense core of a giant molecular
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Problems 1-4: For a globular protein of diameter 6 nm, corresponding to a molecular mass of...
Problems 1-4: For a globular protein of diameter 6 nm, corresponding to a molecular mass of 100 kDa, 1. Calculate the mass in kg. 2. Calculate drag coefficient assuming η_1mPa's 3. Calculate viscous force at 25°C given: The average instantaneous thermal speed of a protein v-(3k*T/m)0.5 k is Boltzmann constant, 1.381 x 10-23 J/HK Tis the absolute temperature, 0 K-273.15°C 1J 1 N'm. 4. Calculate the speed of the protein caused by the centrifugal force. Assume that the centrifugal force...
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Please use the formulate sheet and show all steps to make sure
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a) The initial ratio of deuterium (D) to hydrogen (H) in a planet's atmosphere was 175000; however, the present ratio is 1/1500 and the initial and final abundances of D are 5 x 10° atoms per m3 and 9 x 106 atoms per m2, respectively. What fraction of deuterium has been lost, and what fraction of hydrogen has been lost in this...
All of the following questions are in relation to the following journal article which is available...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
Problems 1-4: For a globular protein of diameter 6 nm, corresponding to a molecular mass of 100 kDa, 1. Calculate the mass in kg. 2. Calculate drag coefficient assuming η_1mPa's 3. Calculate viscous force at 25°C given: The average instantaneous thermal speed of a protein v-(3k*T/m)0.5 k is Boltzmann constant, 1.381 x 10-23 J/HK Tis the absolute temperature, 0 K-273.15°C 1J 1 N'm. 4. Calculate the speed of the protein caused by the centrifugal force. Assume that the centrifugal force...
Please use the formulate sheet and show all steps to make sure
the question is worth any points
a) The initial ratio of deuterium (D) to hydrogen (H) in a planet's atmosphere was 175000; however, the present ratio is 1/1500 and the initial and final abundances of D are 5 x 10° atoms per m3 and 9 x 106 atoms per m2, respectively. What fraction of deuterium has been lost, and what fraction of hydrogen has been lost in this...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
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