What effect will the north pole of one magnet have on the north pole of another magnet. a. repulsive b. attractive c. combative d. no effect 2.why are paperclips attracted to magnets? a. the contain silver b. they contain aluminum c. they contain tin d. they contain iron 3.what is the simplest requirement for an electromagnet? a. a coil of electrified wire wrapped b. a bar magnet and a power source c. a coil of electrified wire d. a length of electrified wire for 20pts

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.