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From: Bert Harleman on 10 Dec 2009 18:25
Suppose you measure the speed of waves at open sea (with a large depth)
Then suppose you change the ocean water with a liquid that has twice the
mass.
Will the waves travel faster? Or slower?

I found the next part of information:
> Wave speed is also dependent on the density of the
> medium. The denser the medium (for the same phase of a medium,
> in this case a liquid), the slower the speed of a wave
> of a particular frequency. Since sea water can vary in density
> (density is determined by temperature, depth, and salinity),
> waves in the ocean can vary in wave speed depending on the sea
> water density.

Waves are formed by the wind. Moving denser liquid requires more energy,
so I think these waves are less high. But what would the effect on the
speed be?


From: Sam Wormley on 10 Dec 2009 18:35
Bert Harleman wrote:
> Suppose you measure the speed of waves at open sea (with a large depth)
> Then suppose you change the ocean water with a liquid that has twice the
> mass.
> Will the waves travel faster? Or slower?
>
> I found the next part of information:
>> Wave speed is also dependent on the density of the
>> medium. The denser the medium (for the same phase of a medium,
>> in this case a liquid), the slower the speed of a wave
>> of a particular frequency. Since sea water can vary in density
>> (density is determined by temperature, depth, and salinity),
>> waves in the ocean can vary in wave speed depending on the sea
>> water density.
>
> Waves are formed by the wind. Moving denser liquid requires more energy,
> so I think these waves are less high. But what would the effect on the
> speed be?
>
>

Check these resources Bert
http://en.wikipedia.org/wiki/Speed_of_sound#Speed_of_sound_in_liquids
http://en.wikipedia.org/wiki/Speed_of_sound#Seawater
http://www.google.com/search?q=sound+wave+velocity+in+liquid
From: Timo Nieminen on 10 Dec 2009 19:56
On Fri, 11 Dec 2009, Bert Harleman wrote:

> Suppose you measure the speed of waves at open sea (with a large depth)
> Then suppose you change the ocean water with a liquid that has twice the
> mass.
> Will the waves travel faster? Or slower?
>
> I found the next part of information:
> > Wave speed is also dependent on the density of the
> > medium. The denser the medium (for the same phase of a medium,
> > in this case a liquid), the slower the speed of a wave
> > of a particular frequency. Since sea water can vary in density
> > (density is determined by temperature, depth, and salinity),
> > waves in the ocean can vary in wave speed depending on the sea
> > water density.
>
> Waves are formed by the wind. Moving denser liquid requires more energy,
> so I think these waves are less high. But what would the effect on the
> speed be?

Moving denser liquid does require more energy. With a denser liquid,
gravity provides more energy. Falling objects give a clue as to what we
might expect from gravity waves (i.e., waves in a liquid driven by
gravity): independence of wave speed on density.

If something other than gravity provides the force (e.g., surface tension
waves a.k.a. capillary waves), then density will matter very much.

Some useful detail on
http://en.wikipedia.org/wiki/Dispersion_(water_waves)

--
Timo
From: Sam Wormley on 10 Dec 2009 19:50
Sam Wormley wrote:
> Bert Harleman wrote:
>> Suppose you measure the speed of waves at open sea (with a large depth)
>> Then suppose you change the ocean water with a liquid that has twice
>> the mass.
>> Will the waves travel faster? Or slower?
>>
>> I found the next part of information:
>>> Wave speed is also dependent on the density of the
>>> medium. The denser the medium (for the same phase of a medium,
>>> in this case a liquid), the slower the speed of a wave
>>> of a particular frequency. Since sea water can vary in density
>>> (density is determined by temperature, depth, and salinity),
>>> waves in the ocean can vary in wave speed depending on the sea
>>> water density.
>>
>> Waves are formed by the wind. Moving denser liquid requires more
>> energy, so I think these waves are less high. But what would the
>> effect on the speed be?
>>
>>
>
> Check these resources Bert
> http://en.wikipedia.org/wiki/Speed_of_sound#Speed_of_sound_in_liquids
> http://en.wikipedia.org/wiki/Speed_of_sound#Seawater
> http://www.google.com/search?q=sound+wave+velocity+in+liquid

Perhaps you are thinking surface waves
http://hyperphysics.phy-astr.gsu.edu/HBASE/watwav.html

From: Benj on 11 Dec 2009 00:54
On Dec 10, 6:35 pm, Sam Wormley <sworml...(a)mchsi.com> wrote:

> > Waves are formed by the wind. Moving denser liquid requires more energy,
> > so I think these waves are less high. But what would the effect on the
> > speed be?

> Check these resources Bert
>    http://en.wikipedia.org/wiki/Speed_of_sound#Speed_of_sound_in_liquids
>    http://en.wikipedia.org/wiki/Speed_of_sound#Seawater
>    http://www.google.com/search?q=sound+wave+velocity+in+liquid

Thanks again, "Sam the Sham" for proving you are an idiot bot. I
suggest you download a first grade textbook on reading and try to
understand it. He's talking about ocean surface waves not sound waves
in water. Congratulations you've once again proved in this public
international forum that you are nothing but an idiot bot.



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