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Answer to Question #35823 in Mechanics | Relativity for fox

Question #35823
how long can a 100 watt bulb burn with 1kg of any material??"
Expert's answer
Einstein formula is


Amount of energy in 1kg is

E=1*(3*10^8)^2 = 9*10^16 J

Hence it can burn

9*10^16/100 = 9*10^14 seconds. As one year is 31*10^6 seconds, it will approximately burn 29*10^6 years

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