Express the answer in scientific notation A particular star is 2 4 x 10 7 m away from Earth with a luminosity L of 1 8 1028 W

Question

Express the answer in scientific notation A particular star is 2 4 x 10 7 m away from Earth with a luminosity L of 1 8 1028 W Ignoring the effects of the atmosphere what is the brightness B of the star in W m as observed from Earth B x 10 W

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