Calculate the ratio of the energy generation rate for the pp chain to the energy generation rate for the CNO cycle given the present conditions of the Sun: T=1.5696 x 107 K, p=1.527 x 105 Kg/m3, X=0.3397 and Xcno=0.0141.
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- LTI Launch A PHY035 MODULE 2 REMONAL E X + A webassign.net/web/Student/Assignment-Responses/last?dep=29211510 Paus Apps Imported From IE a Registration: Noteb. O PS - PHILGEPS ONL. iLovePDF | Online P.. S Procurement Service REHABILITATION IC. p Government Procur. a Contact Us Philipp. our best submission for each question part is used for your score. 1. DETAILS KATZPSEF1 29.P.042. MY NOTES ASK YOUR TEACH The figure below shows five resistors and two batteries connected in a circuit. What are the currents I, , and I (Consider the following values: R, 1.06 n, R, 2.18 0, R-3.12 0, R-4.16 0, R-6.06 0. Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign. Indicate the direction with the sign of your answer.) A Rs 12.0 V - ww R. 9.00 V RIf the sun expanded to a radius 200 times it's present radius, what would the average density be (in g/cm^3?)2 of 7 Question A2 a) Calculate the mass loss rate of the Sun M due to the solar wind flow. Assume average properties of the solar wind of number density 6 protons cm³, and a flow speed of 450 km s-1. Express your answer in units of both kg per year, and solar masses per year. b) Suppose the solar wind flow is perfectly radial. Calculate the expected rate of change of solar rotation frequency dw at the present time, based on conservation of angular momen- tum. Give your answer in units of rad s-1 y-1 (i.e., radians per second per year) and also in terms of fractional change per year, i.e., 1 du. w dt' Use a current solar rotation period of P = 25.38 days to calculate the current angular frequency of rotation w. The moment of inertia of a uniform sphere is MR². You can assume that the radius of the Sun is approximately constant, and the change in its moment of inertia due to the solar wind is only due to the mass loss. Page 3 c) By observing the rotation period of stars similar to the…
- Fusion only occurs in the solar core. Assuming that 10% of the Sun’s total mass is available to participate in fusion, how long can the Sun continue hydrogen fusion until all available mass is used up? (express your answer in years)Assume that the solar wind causes the Sun to lose mass at a rate of 2 x 10’ kg/s. If you assume the wind is emitted a constant rate, estimate the time (in units of Gyr =Gigayears = 10° years) that it will take the entire Sun to evaporate via its solar wind emission. (Of course, the rate won't be constant throughout the lifetime of the Sun---this is just a rough estimate to understand the timescale associated with this process.) [Hint: you need to look up a number and do several unit conversions; this is a *rate* problem. Enter your answer as an integer or decimal, NOT in scientific notation.]What types of changes effect the Sun's energy output? Cycle 24 Sunspot Number (V2.0) Prediction (2016 10) 300 200 100 Cycle Cycle Cycle 22 23 24 1985 1990 1995 2000 2005 2010 2015 2020 Hathaway NASA/ARC O A. 11 year solar sunspot cycles change the amount of radiation given off by the Sun. O B. As the Sun rotates more energy is scattered to space and less is retained on the surface. O C. Cycles of solar flares and prominences heat and cool the layers below the Sun's surface. O D. Solar energy is affected by the core output of photons.
- a.Calculate the mass loss rate of the Sun M˙ due to the solar wind flow. Assume averageproperties of the solar wind of number density 6 protons cm−3, and a flow speed of 450 kms−1. Express your answer in units of both kg per year, and solar masses per year. b.Suppose the solar wind flow is perfectly radial. Calculate the expected rate of change ofsolar rotation frequency dω/dt at the present time, based on conservation of angular momentum. Give your answer in units of rad s−1 y−1(i.e., radians per second per year) and alsoin terms of fractional change per year, i.e., 1/ωdω/dt .Use a current solar rotation period of P = 25.38 days to calculate the current angularfrequency of rotation ω. The moment of inertia of a uniform sphere is 2/5 MR2. You canassume that the radius of the Sun is approximately constant, and the change in its momentof inertia due to the solar wind is only due to the mass loss. c.By observing the rotation period of stars similar to the Sun, it is inferred that their…If you were located 100 km from a 1 GW nuclear power plant,what would the neutrino flux be at your location? Assume that a1 GW nuclear power plant releases 1021 neutrinos per second andyou present a 1 m2 surface to the neutrino flux.Why does nuclear fusion only take place in the Sun’s core?
- For Solar composition, μ = 0.61c) Derive the Schwarzschild criterion for the onset of convection in an ideal gas, namely d ln T d ln P 7-1 Y Explain all steps in your derivation, and justify any assumptions that you make. d) In a region of convective instability near the surface of a solar-type star of total mass M, the temperature and pressure are related approximately by the expression P KT5/2. Show that the temperature gradient for an ideal gas in hydrostatic = equilibrium in this convection zone is given by dT dr 2Gm(r)μ 5Rr² Further, assuming that the mass in the convection zone is small compared to M, show that at a depth h measured from the top of the convection zone, the temperature is approximately given by T = Ts + 2GMμ -h₂ 5RR² when his small compared to R, and Ts is the temperature at the top of the convection zone.