13. [410 Points] DETAILS SERPSET9 13.P.065. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER As an astronaut, you observe a small planet to be spherical. After landing on the planet, you set off. walking always straight ahead, and find yourself returning to your spacecraft from the opposite side after completlng a lap of 24.6 km. You hold a hammer and a falcon feather at a height of 1.32 m, release them, and observe that they fall together to the surface in 29.7 5. Determine the mass of the planet. [ W! kg 13. [I10 Points] DETAILS SERPSE10 13.6.0P.022. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 959-kg satellite orbits the Earth at a constant altitude of 91-km. {a} How much energy must be added to the system to move the satellite into a circular orbit with altitude 191 km? | M] (b) What is the change in the system's kinetic energy? [ ' M] (c) What is the Change in the system's potential energy? [ ' M] New Help? mg 15. [-/10 Points] DETAILS SERPSE10 13.6.OP.028. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A projectile is launched directly upward from the surface of the Earth with an initial speed of 7.2 km/s. Assuming air resistance is negligible, what is the maximum height of the projectile (in m)? m Need Help? Read It17. [-/10 Points] DETAILS SERPSE10 13.A.P.033. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Assume you are agile enough to run across a horizontal surface at 8.00 m/s, independently of the value of the gravitational field. Assume your mass to be 90 kg. (a) What would be the radius of an airless spherical asteroid of uniform density 1.80 x 10 kg/m on which you could launch yourself into orbit by running? m (b) What would be the mass of this asteroid? kg (c) What would be your period? (d) Would your running significantly affect the rotation of the asteroid? O yes O no Explain your