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Mathematics, 06.05.2020 09:01 lorenialopez1234

If a sunspot has a temperature of 3900 K and the photosphere of the Sun has a temperature of 5760 K, how many times
brighter per unit area is the photosphere than the sunspot?

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If a sunspot has a temperature of 3900 K and the photosphere of the Sun has a temperature of 5760 K,...

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