Hohmann transfer assuming the orbits of earth and mars are circular and coplanar, calculate: (a) the time required for a hohmann transfer from earth orbit to mars orbit (days) (b) the initial position of mars (a ) in its orbit relative to earth for interception to occur (degrees) (c) the launch vehicle c3 required to launch into the transfer orbit (km-/s) (d) the spacecraft delta-v magnitude required to enter martian orbit (km/s)

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic