(a) What is the practical purpose of a compass? What does a compass measure?
(b) Indicate several things you notice. When the bar magnet is placed on the board, are the compasses still measuring what you indicate in part (a)? Explain your answer.
(c) Draw a bird’s eye view of the white-board. Draw arrows in the location where compasses are placed. Arrows should point towards the red end of the compasses' needles.

Aswimmer is determined to cross a river that flows due south with a strong current. initially, the swimmer is on the west bank desiring to reach a camp directly across the river on the opposite bank. in which direction shoud the swimmer head? a. the swimmer should swim southeast. b. the swimmer should swim south. c. the swimmer shuold swim northeast. d. the swimmer should swim due north. e. the swimmer should swim due east.