The proton -proton mechanism that accounts for energy production in the sun releases 26.7 MeVenergy for each event. In this process, protons fuse to form an alpha particle (4He). At what rate dmdt is hydrogen being consumed in the core of the sun by the p-p cycle? Power of sun is3.90×1026W.

Question

The proton -proton mechanism that accounts for energy production in the sun releases 26.7 MeVenergy for each event. In this process, protons fuse to form an alpha particle (4He). At what rate dmdt is hydrogen being consumed in the core of the sun by the p-p cycle? Power of sun is3.90×1026W.

Filo · Accepted Answer

[c] The rate dm/dt can be calculate as; Power, P=dEdt=dEdm×dmdt=ΔEΔm×dmdt ∴dmdt=ΔmΔEP        ?..(i) We known that 26.2MeV=4.20×10−12J of thermal energy is produced when four protons are consumed. This is ΔE=4.20×10−12J for Δm=4×(1.67×10−27kg). Substituting these values in equation (i), we have dmdt=ΔmΔEP=4(1.67×10−27)4.20×10−12×(3.90×1026) =6.2×1011kg/s

Question Text	The proton -proton mechanism that accounts for energy production in the sun releases 26.7 MeVenergy for each event. In this process, protons fuse to form an alpha particle (4He). At what rate dmdt is hydrogen being consumed in the core of the sun by the p-p cycle? Power of sun is3.90×1026W.
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The proton -proton mechanism that accounts for energy production in the sun releases 26.7 MeVenergy for each event. In this process, protons fuse to form an alpha particle (4He). At what rate dmdt is hydrogen being consumed in the core of the sun by the p-p cycle? Power of sun is3.90×1026W.

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