Neutrinos produced in the sun escape immediately. Why?
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Neutrinos produced in the sun escape immediately. Why?
Step by step
Solved in 2 steps
- (a) Calculate the rate at which the Sun generates neutrinos. Assume that energy production is entirely by the proton–proton fusion cycle. (b) At what rate do solar neutrinos reach Earth?Describe the following three fuel cycles: once-through, modified open and fully closed. Also state roughly how long it is before the relative radiotoxicity of the associated waste form reaches that of uranium ore.How much energy would be released if six protons and six neutrons were combined to form C-12? (Note: Particle masses: proton mass = 938.272MeV/c², neutron mass = 939.565MeV/c², and C-12 nucleus mass= 11175MeV/c². Energy released : = MeV.
- The kiloton, which is used J (approximately the energy released in the explosion of 1000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature of 1 kg of water by 1°C and that 4184 joules is equal to 1 kilocalorie, show that the energy released by a 20-kiloton bomb is enough to heat 4.0 X 10 to measure the energy released in an atomic explosion, is equal to 4.2 X 108 kilograms of water (nearly half a million tons) through 50°C.Recall that the solar constant-the flux of solar energy reaching Earth's vicinity- is about 1390 W/m^2. ) (The distance from the sun = 1 AU = 1.50×10¹¹ m.) The Sun's energy originates from a chain of fusion reactions; each reaction chain releases 26.7 MeV of mass energy. At what rate does the Sun lose mass? Express the result in kilograms per year. (in kg/yr) A: 5.379x10¹6 B: 6.294x1016 oC: 7.364x10¹6 D: 8.616x1016 E: 1.008x1017 OF: 1.179x1017 G: 1.380x10¹7 H: 1.614x1017