the surface of the Sun is at a temperature of about 5800 K. Suppose that the sun were the same size, but it had a temperature of 7000 K instead of 5800 K. use the graph of Planck's law to predict the ways that the sun's light would be different

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium