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    SCIENCE QUESTION

    A dolphin produces a sound with a frequency of 120 000Hz. The wavelength is 1.25 cm , What is the speed of sound in water? Is that faster or slower than in air? Why?

    PLEASE ANSWER THE ABOVE QUESTION.

    16 Comments

    Do your own homework!

    Banned

    slower because the water is thicker than air :?

    Banned

    it's slower i think

    its slower because sound waves take longer to travel through water than it does through air....

    I can't give any figures without googling since i did physics A-Level a good few years ago!

    Original Poster

    Goonieman;8489055

    Do your own homework!



    It's not my homework!

    OK MAYBE I lie! :whistling:

    id say faster at a guess cos the particles are closer together so have less distance to travel before banging into another one - and faster still through a solid.

    ....I think... from what i can remember from GCSE science back in 1994!! - Basically i dont know!

    clubba 786;8489077

    It's not my homework! OK MAYBE I lie! :whistling:



    Ok i'd say slower....or faster.

    Original Poster

    Ok so now I really need to know what the speed of the damn thing is in water! Please

    faster in water (denser)

    speed = f x wavelength
    speed = 120000 x 0.0125
    speed = 1500m/s
    faster
    travels by compressions and rarefactions of the denser medium

    from what i can remember it is about 5 times faster

    Banned

    chesso;8489153

    speed = f x wavelengthspeed = 120000 x 0.0125speed = 1500m/sfastertravels … speed = f x wavelengthspeed = 120000 x 0.0125speed = 1500m/sfastertravels by compressions and rarefactions of the denser medium



    lol o dear! i was good at physics when i studied it :lol:

    bykergrove;8489179

    lol o dear! i was good at physics when i studied it :lol:


    Well at least you can check my sums!!;-)

    MANJ_007;8489081

    id say faster at a guess cos the particles are closer together so have … id say faster at a guess cos the particles are closer together so have less distance to travel before banging into another one - and faster still through a solid.....I think... from what i can remember from GCSE science back in 1994!! - Basically i dont know!



    chesso;8489153

    speed = f x wavelengthspeed = 120000 x 0.0125speed = 1500m/sfastertravels … speed = f x wavelengthspeed = 120000 x 0.0125speed = 1500m/sfastertravels by compressions and rarefactions of the denser medium



    Thats what i said - well sort of!

    MANJ_007;8489236

    Thats what i said - well sort of!



    ;-):-D:thumbsup:

    Definitely faster!!!!!

    Because the particles are closer together, the distance to the next closest particle is therefore shorter which means less distance needs to be traveled to transfer the energy from one particle to another, basically what chesso: said.

    WTF did you people learn at school?
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