Answer Happy

Question for Topic 12: Why do stars shine Part 1) Select all of the true statements about blackbody radiation. Stars only emit radiation in the visible light spectrum. A hot, blue star may emit more radiation at red wavelengths than a cool, red star. Stars can only emit light at particular visible frequencies based on their colour. A hot, blue star can only emit radiation at blue wavelengths. Hotter bodies will have a blackbody radiation curve that peaks closer to the red end of the spectrum than curves of cooler stars. Part 2) Thanks to recent advancements in telescope precision and instrumentation power, we now know of many exoplanets (planets that orbit stars beyond our Solar System). A particular planet orbits a star a few light years from Earth. If the radius of the star is 50% that of our Sun's radius and it's power output is 1.1044 x 1025 W, what is the surface temperature of the star? Assume the star is a perfect blackbody. T = K Part 3) The planet is 2.72 times the mass of the Earth. If the force experienced between the star and planet is 6.4052 x 1024 N and the star has a mass that is 37.4% the mass of the Sun, what is the distance between the planet and star? Note that the unit is the astronomical unit, which is the average distance between the Earth and the Sun. r = AU