You are made from stardust Mr Cotton
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You are made from stardust Mr Cotton (who contains a lot more star dust than you!)
Transcript of You are made from stardust Mr Cotton
How long would the Sun last at its current luminosity if it was GPE powered? (Note that it would contract at about 40m per year)
๐ธ๐๐๐๐๐ฆ (๐๐) =1
4 ร 3.14 ร 8.85 ร 10โ12ร
1.60 ร 10โ19 2
1 ร 10โ15
๐ =1
4๐๐0
๐
๐
๐๐ =1
4๐๐0
๐2
๐
๐ธ๐๐๐๐๐ฆ = 2.3 ร 10โ13๐ฑ
๐ด๐ฃ๐๐๐๐๐ ๐๐๐๐๐ก๐๐ ๐๐๐๐๐๐ฆ =3
2๐พ๐
2.3 ร 10โ13 =3
2ร 1.38 ร 10โ23 ร ๐
๐ป = ๐. ๐ ร ๐๐๐๐ ๐ฒ
Temperature needed for fusion๐. ๐ ร ๐๐๐๐ ๐ฒ
Actual temperature of the core๐. ๐ ร ๐๐๐ ๐ฒ
Problem!