The Formula $E = \sigma T ^ { 4 }$ Expresses the Relationship Between Kelvin Temperature and the Amount of Expresses

question 62

Short Answer

The formula   $E = \sigma T ^ { 4 }$ expresses the relationship between Kelvin temperature and the amount of radiated energy. If a star is three times the temperature of the Sun, how many times more intense is the energy radiated from an equal-sized area of its surface? (Answer with a number only.

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