CBSE Class 9 Physics Help

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  1. 1gamesofbi8537

    Địa chỉ chữa xuất tinh sớm hiệu quả tại TP Vinh Nghệ An

    1gamesofbi8537, Jan 28, 2021
    Replies:
    0
    Views:
    33
    1gamesofbi8537
    Jan 28, 2021
  2. 1gamesofbi8537

    Cắt bao quy đầu ở đâu Thanh Hóa? Hết bao nhiêu tiền?

    1gamesofbi8537, Jan 25, 2021
    Replies:
    0
    Views:
    17
    1gamesofbi8537
    Jan 25, 2021
  3. 1gamesofbi8537

    Chữa Xuất Tinh Sớm ở đâu Thanh Hóa? Hết bao nhiêu tiền?

    1gamesofbi8537, Jan 5, 2021
    Replies:
    0
    Views:
    63
    1gamesofbi8537
    Jan 5, 2021
  4. aplus9xx68

    viêm âm đạo

    aplus9xx68, Dec 31, 2020
    Replies:
    0
    Views:
    60
    aplus9xx68
    Dec 31, 2020
  5. 1gamesofbi8537

    Địa chỉ chữa yếu sinh lý uy tín tại Tp. Thanh Hóa

    1gamesofbi8537, Dec 20, 2020
    Replies:
    0
    Views:
    55
    1gamesofbi8537
    Dec 20, 2020
  6. Vinila Choudary

    Describe an activity to study the reflection of sound.

    Vinila Choudary, Mar 23, 2012
    Replies:
    1
    Views:
    2,432
    ford4582
    Aug 18, 2020
  7. hul043956

    Cá cược thể thao FB88 trực tuyến tại FB88 - An toàn, bảo mật, uy tín

    hul043956, Aug 16, 2020
    Replies:
    0
    Views:
    121
    hul043956
    Aug 16, 2020
  8. ford4582

    hướng dẫn chi tiết cách tăng doanh thu khi trở thành đại lý A+Bet

    ford4582, Aug 8, 2020
    Replies:
    0
    Views:
    123
    ford4582
    Aug 8, 2020
  9. ford4582

    kèo nhà cái - tỷ lệ kèo cá cược bóng đá A+Bet cập nhật mới nhất

    ford4582, Aug 4, 2020
    Replies:
    0
    Views:
    91
    ford4582
    Aug 4, 2020
  10. Vinila Choudary

    If 20 waves are produced per second, what is the frequency in hertz?

    Vinila Choudary, Jan 30, 2012
    Replies:
    1
    Views:
    2,248
    usama
    Nov 25, 2018
  11. Vinila Choudary

    when the train is far off but its sound cannot be heard through air. Why

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    2,589
    Vinila Choudary
    Mar 23, 2012
  12. Vinila Choudary

    A powerful sound signal sent from a ship is received again after 2.4 seconds.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    850
    Vinila Choudary
    Mar 23, 2012
  13. Vinila Choudary

    The boy hears the echo of his shout after 4.8 seconds. Find the speed of the sound.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    712
    Vinila Choudary
    Mar 23, 2012
  14. Vinila Choudary

    A sound wave has a frequency 2 kHz and wavelength 40 cm. How long will it take to travel 1.6 km?

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    1,157
    Vinila Choudary
    Mar 23, 2012
  15. Vinila Choudary

    calculate the distance of hill from the boy.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    726
    Vinila Choudary
    Mar 23, 2012
  16. Vinila Choudary

    calculate the wavelength and frequency of new wave.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    912
    Vinila Choudary
    Mar 23, 2012
  17. Vinila Choudary

    A longitudinal wave of wavelength 1 cm travels in air with a speed of 330 rn/s.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    785
    Vinila Choudary
    Mar 23, 2012
  18. Vinila Choudary

    The wavelength of waves produced on the surface of water is 20 cm.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    763
    Vinila Choudary
    Mar 23, 2012
  19. Vinila Choudary

    wavelength when frequency is 256 Hz.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    896
    Vinila Choudary
    Mar 23, 2012
  20. Vinila Choudary

    State the laws of reflection of sound.

    Vinila Choudary, Mar 23, 2012
    Replies:
    0
    Views:
    776
    Vinila Choudary
    Mar 23, 2012
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