Resources Check Answer 16 of 20 Questions Assignment Score: 0% Ly Give Up? Hint Press Esc to exit full screen 10 Question 0% 0 of co Attempts no Astronomers discover an exoplanet, a planet orbiting a star other than the Sun, that has an orbital period of 2.50 Earth years in a 11 Question 0% circular orbit around its star, which has a measured mass of 3.40 x 1050 kg. 0 of co Attempts @ Macmillan Learning 12 Question 0% Determine the radius r of the exoplanet's orbit. 0 of co Attempts r = m 13 Question 0% 0 of co Attempts 14 Question 0% 0 of co Attempts 15 Question 0% 0 of co Attempts 16 Question 0% 0 of co Attempts 17 Question 0% 0 of co Attempts 18 Question 0% 0 of co Attempts 19 Question 0 of co Attempts 20 Question 0% 0 of co Attempts17 of 20 Questions Assignment Score: Resources Ly Give Up? Hint Check Answer 0% Press Esc to exit full screen 10 Question 0% 0 of co Attempts A planet of mass m = 3.65 x 1024 kg orbits a star of mass M = 3.45 x 10" kg in a circular path. The radius of the orbit is 11 Question 0% R = 8.45 x 10' km. 0 of co Attempts Macmillan Learning What is the orbital period Tplanet of the planet in Earth days? 12 Question 0% 0 of co Attempts 13 Question 0% Tplanet = days 0 of co Attempts 14 Question 0% 0 of co Attempts 15 Question 0% 0 of co Attempts 16 Question 0% 0 of co Attempts 17 Question 0% 0 of co Attempts 18 Question 0% 0 of co Attempts 19 Question 0 of co Attempts 20 Question 0% 0 of co Attempts20 of 20 Questions Assignment Score: 0% Resources Ly Give Up? Hint Check Answer Esc to exit full screen 10 Question Press 0% 0 of co Attempts The Schwarzschild radius is the distance from an object at which the escape velocity is equal to the speed of light. A black hole 11 Question 0% is an object that is smaller than its Schwarzschild radius, so not even light itself can escape a black hole. The Schwarzschild 0 of co Attempts radius r depends on the mass m of the black hole according to the equation Macmillan Learning 12 Question 0% r = 2Gm 0 of co Attempts where G = 6.673 x 10-11 N.m / kg2 is the gravitational constant and c = 2.998 x 108 m/s is the speed of light. 13 Question 0% 0 of co Attempts Consider a black hole with a mass of 2.10 x 10'Mo. Use the 14 Question 0% given equation to find the Schwarzschild radius for this black Schwarzschild radius: m 0 of co Attempts hole. Remember that 1 Mo = 1.989 x 1030 kg and 1 N = 1 kg . m / $2 15 Question 0% 0 of co Attempts What is this radius in units of the solar radius? Remember 16 Question 0% that 1 Ro = 6.955 x 10 m. radius: Ro 0 of co Attempts 17 Question 0% 0 of co Attempts 18 Question 0 of co Attempts 19 Question 0 of co Attempts 20 Question 0% 0 of co Attempts