The Sun’s total energy output is 3.85×1026 watts, and 1 watt…
The Sun’s total energy output is 3.85×1026 watts, and 1 watt is 1 Joule/second. Assume 4.3×10−12 J is released from each proton–proton chain of reactions. Use the energy yield from the proton–proton chain to determine how many proton–proton chain fusion cycles must be happening each second in the solar core.