The Sun radiates electromagnetic energy at the rate of 3.92 × 10²⁶ W. What is the change in the Sun's mass during each second that it is radiating energy?

Question

Quizplus · Accepted Answer

According to Einstein’s famous equation E=mc², energy and mass are equivalent and interchangeable. Therefore, we can use the formula ∆m= ∆E/c², where ∆E is the amount of energy radiated per second and c is the speed of light (299,792,458 m/s). 
∆m = (3.92 × 10²⁶ W)/(299,792,458 m/s)² 
∆m = 4.36 × 10¹⁹ kg

The Sun Radiates Electromagnetic Energy at the Rate of 3