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3. If a star converted every bit of its mass into energy the conversion efficiency would be 100%. However, no star is this efficient in its energy production. Stars with less than 1.3 solar masses (most stars are less than 1.3 solar masses) convert hydrogen into helium with an efficiency of only 0.7%. Bearing in mind that Achernar has a mass of 13.4 x 1030 kg, how long will it live if it converts all of its hydrogen into helium with an efficiency 0.7%? Please note that it won't actually convert all of its hydrogen into helium so this is a rather optimistic upper limit for the lifetime of Achernar. Also, 1 year = 365.25 days. a ca

3. If a star converted every bit of its mass into energy the conversion efficiency would be 100%. However, no star is this efficient in its energy production. Stars with less than 1.3 solar masses (most stars are less than 1.3 solar masses) convert hydrogen into helium with an efficiency of only 0.7%. Bearing in mind that Achernar has a mass of 13.4 x 1030 kg, how long will it live if it converts all of its hydrogen into helium with an efficiency 0.7%? Please note that it won't actually convert all of its hydrogen into helium so this is a rather optimistic upper limit for the lifetime of Achernar. Also, 1 year = 365.25 days. a ca

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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3. If a star converted every bit of its mass into energy the conversion efficiency would be 100%. However, no star is this efficient in its energy production. Stars with less than 1.3 solar masses (most stars are less than 1.3 solar masses) convert hydrogen into helium with an efficiency of only 0.7%. Bearing in mind that Achernar has a mass of 13.4 x 1030 kg, how long will it live if it converts all of its hydrogen into helium with an efficiency 0.7% ? Please note that it won't actually convert all of its hydrogen into helium so this is a rather optimistic upper limit for the lifetime of Achernar. Also, 1 year = 365.25 days. Lifetime = 3.63e052 x years
Transcribed Image Text:3. If a star converted every bit of its mass into energy the conversion efficiency would be 100%. However, no star is this efficient in its energy production. Stars with less than 1.3 solar masses (most stars are less than 1.3 solar masses) convert hydrogen into helium with an efficiency of only 0.7%. Bearing in mind that Achernar has a mass of 13.4 x 1030 kg, how long will it live if it converts all of its hydrogen into helium with an efficiency 0.7% ? Please note that it won't actually convert all of its hydrogen into helium so this is a rather optimistic upper limit for the lifetime of Achernar. Also, 1 year = 365.25 days. Lifetime = 3.63e052 x years
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