A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.7 m/s2. (a) If the tension in the cord is 52 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.7 m/s2?

Ithink it’s: light bounce if off a mirror

Aand b antarctica is a north pole.  field lines enter earth near the north pole.the magnetic pole near antarctica is a north pole.compasses point toward a magnetic pole that is a north pole.field lines circle earth from east to west.a compass can lead a hiker to the geographic north pole.