Each Kilogram of Hydrogen That Fuses into Helium Releases About $\odot$

question 54

Multiple Choice

Each kilogram of hydrogen that fuses into helium releases about 6*10¹⁴ Joules of energy. How many tons of hydrogen are fused each second to power a massive main-sequence star with a luminosity of 100 L _$\odot$ ? Note that 1 L _$\odot$ = 4 * 10²⁶ Joule/second and 1 ton = 10³ kg.

• A) 2 * 10⁶ tons
• B) 7* 10⁷ tons
• C) 2 *10⁹ tons
• D) 7 *10¹⁰ tons
• E) 2 * 10¹¹ tons

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Definitions:

Heckscher-Ohlin Theory

An economic theory that suggests countries export what they can most efficiently and abundantly produce, based on factors of production like land, labor, and capital.

Absolute Advantage

The ability of a country, individual, company or region to produce a good or service at a lower cost per unit than the cost at which any other entity produces that good or service.

Comparative Advantage

The skill of an entity, whether a person, corporation, or country, to create a product or service with smaller opportunity costs than its competition.

Absolute Advantage

Absolute advantage is the ability of a country or entity to produce a good or service more efficiently than others, using fewer resources.