The Stefan-Boltzmann law says that hot objects emit energy proportional to the fourth power of their temperature. One star has a temperature of 30,000 K and another star has a temperature of 6,000 K. Compared to the cooler star, how much more energy per second will the hotter star radiate from each square metre of its surface?
A) 5 times as much
B) 25 times as much
C) 625 times as much
D) 1.3×1015 times
Correct Answer:
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