if a 0.49kg squirrel jumps from a tree branch that is 3.6m high to the top of a bird feeder that is 1.5m high. what is the change in gravitational potential energy of the squirrel? (the acceleration due to gravity is 9.8m/s^2)

The field lines around one end of a bar magnet are shown below based on the diagram, what can you conclude about the pole of the magnet? a.is a south pole because the field hnes spread out from this end b.a north pole because the field lines spread out from this end c.a nouth pole because the field lines enter the magnet at this end d.is a north pole because the field lines enter the magnet at this end