If the Sun Converts 5 × 10¹¹ Kg of H

question 60

Multiple Choice

If the Sun converts 5 × 10¹¹ kg of H to He per second and the mass of a single hydrogen nucleus is 1.7 × 10^-27 kg,how many net proton-proton reactions go on per second in the Sun? What is the luminosity produced if the mass difference between a single helium nucleus and four hydrogen nuclei is 4 × 10^-29 kg? Note that 1 watt = 1 m²kg/s³.

• A) 7 × 10³⁷ reactions per second; 3 × 10²⁶ watt
• B) 3 × 10³⁸ reactions per second; 10²⁷ watt
• C) 3 × 10³⁸ reactions per second; 4 × 10²⁶ watt
• D) 7 × 10³⁷ reactions per second; 5 × 10²⁵ watt

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