sound waves and doppler effect

10:36

10:36

1:17:45

3:02

7:40

2:48

1:16:40

20:33

24:58

1:20:36

9:50

1:17:31

4:41

7:40

1:15

2:54

11:27

2:27

1:48

1:01

کوتاه

2:32

3:27

1:34:55

2:09

3:12

5:35

6:42

8:22

4:02

کوتاه

5:21

3:02

4:55

4:01

5:03

3:46

1:15

1:45

1:57