class 9 physics

6:53:47

2:32:29

13:41

1:48:41

1:30:59

1:34:43

48:48

5:19:21

29:21

1:19:17

2:19:59

2:55:10

2:44:13

51:31

58:57

2:58:57

2:28:24

3:36:53

1:17:19

3:23:43

10:17

2:01:09

1:10:34

7:12:44

14:57

9:01

4:17:32

32:37

2:37:15

15:20

5:57:25

1:36:19

5:40:51

27:29

1:13:06

3:38:51

40:38

1:53:43

14:06

16:50

1:00:56

38:09

12:33

35:54

41:47

54:09

11:26:05

1:29:58

55:10

5:43

1:13:26

39:53

43:05

1:00:30

23:09

16:31

44:44

2:19:08

1:45:30

49:27