X-rays can be dangerous. select the best answer from the choices provided t f

Zamir and talia raced through a maze. zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. compare their displacements:

Which is not true about oxygen-17 and oxygen-18?

How would a small bar magnet be oriented when placed at position x?