A certain sedentary person uses energy at an average rate of70 W. All this energ

Question

A certain sedentary person uses energy at an average rate of70 W. All this energy has its ultimate origin in the sun. How muchmatter is converted to energy in the sun per day to supply thisperson?
answer is 6.72 x 10-11kg      how is this achived? A certain sedentary person uses energy at an average rate of70 W. All this energy has its ultimate origin in the sun. How muchmatter is converted to energy in the sun per day to supply thisperson?
answer is 6.72 x 10-11kg      how is this achived? how is this achived?

Explanation / Answer

This is a perfect example of Einsteins famous equation E=Mc2 energy is equal to mass times the speed of light squared energy is equal to mass times the speed of light squared also you need to know that P=E/t E=Pt =70(86400)                                          (Thereare 86400 seconds in one day) =6048000 Joules Now we use relativity E=Mc2 M=E/c2 =(6048000)/(3 x 108)2 =6.72 x 10-11 kg =6.72 x 10-11 kg

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