Hello I need help on questions 1,2,3, and 4 for review and notes thank you so much!

1. [-/1 Points] DETAILS SERPSE10 13.4.OP.012. 0/6 Submissions Used Selected astronomical data for Jupiter's moon Adrastea is given in the table. Moon Orbital Radius (km) Orbital Period (days) Adrastea 1.30 x 105 0.30 From these data, calculate the mass of Jupiter (in kg). kg Need Help? Read It Submit Answer2. [-/1 Points] DETAILS SERPSE10 13.4.OP.014.MI. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |V| = 190 km/s and the orbital period of each is 12.1 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 x 1030 kg.) solar masses XCM Need Help? Read It Master It3. [-/1 Points] DETAILS SERPSE10 13.4.OP.015. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER An astronomer discovered two planets, X and Y, orbiting a star. From the perspective of the astronomer, the planets orbit the star as depicted in the figures. Five years ago, the planets were in the position shown in figure (a), with X, Y, and the star in a straight line. Today, planet X is in the position shown in figure (b), having made an angular displacement of 90.0. If the radii of their orbits are in the ratio 7:5, what is the angular displacement of Y? (Give your answer in revolutions.) a b revolutions Need Help? Read It4. [-/1 Points] DETAILS SERPSE10 13.4.OP.016. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A comet (see the figure below) approaches the Sun to within 0.570 AU, and its orbital period is 70.6 yr. (AU is the symbol for astronomical unit, where 1 AU = 1.50 x 1041 m is the mean Earth-Sun distance.) How far from the Sun will the comet travel before it starts its return journey? AU Sun 0.570 AU 2a (Orbit is not drawn to scale.)