(a) \(35 – (20) = 35 - 20 = 15\)
(b) \(72 – 90 = -18\)
(c) \((- 15) – (- 18) = (-15) + (18) = 3\)
(d) \((- 20) – (13) = – (20 + 13) = – 33\)
(e)\( 23 – (- 12) = 23 + 12 = 35\)
(f) \((- 32) – (- 40) = (- 32) + 40 = 8\)
Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.
Column I | Column II |
N-______ | _________ |
N-________ | Attraction |
S-N | |
________-S | Repulsion |
Draw:
1) a leaf
2) a taproot and
3) a flower,
you have studied for Table 4.3