Captain Omega of the Imperial Space Patrol is in his Starcruiser,which is in a circular orbit around the mysterious Planet X.Sensors indicate that the planet has a radius of 6640 km, and the Starcruiser is orbitting at analtitude of 1400 km above theplanet's surface. The ship completes one orbit in 3.8 hours.
(a) What is the orbital speed of the Star cruiser?
(b) What is the mass of Planet X?
(c) What would be the period of the Starcruiser's orbit if it wereto triple its altitude above the planet's surface?