p122 the properties of waves

4:21

3:49

3:58

16:14

13:18

5:21

39:45

8:22

13:14

1:05

32:10

10:02

12:43

7:55

15:10

6:22

51:43

10:37

2:18

1:06:37

14:57

11:13

23:19

54:16

1:40

7:02

14:38

54:41

22:54

11:24

9:07

8:01

2:48

8:59

5:36

2:15

3:47

2:02

10:17

16:35

12:17

20:19

4:16

2:27

1:17:17

2:16

2:36

3:47

11:44

9:09

5:20

53:27

13:03

7:49

1:55

9:57

12:07

19:52

13:39

30:08