Physics, 29.04.2021 01:00 dayanara72
There is a bottleneck in producing masses higher than4He, because there are no mass-5or mass-8 stable nuclides. For older stars with high densities and high temperatures (T>100 million K), three alpha particles can form12C. This occurs by two alpha particles firstforming8Be, and then8Be reacting with another alpha particle to form12C before8Be candecay back to two alpha particles. a) Explain why this can only happen in very hot stars and high density. b) Calculate how much energy is given up when three alpha particles form12C.
Answers: 2
Physics, 22.06.2019 05:00
Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?
Answers: 1
Physics, 22.06.2019 16:30
Write a polynomial function with the given zeros x= -1,0,2show your work
Answers: 3
There is a bottleneck in producing masses higher than4He, because there are no mass-5or mass-8 stabl...
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