Re: Water wave question..

On Jul 2, 5:53 pm, "Spaceman" <space...@xxxxxxxxxxxxxxxxxxxxxxxxxx>
wrote:
If a 1 centimeter sphere that floats in water
half way normally just sitting there and has a mass of 1gram,
were dropped from 2 centimeters above the water...
What would the wave length from the first peak to the second peak be,
and what would the height of that peak also be?
(anyone know an applet on the web that might do this stuff maybe?)

If you want to make fun of me and my crazy ideas
please do post an answer to the above question.
:)
--
James M Driscoll Jr
Spaceman

OK James, and you already know what a stickler for details I am, I
have to think about the problem that you are posting rater than
providing an univormed knee-jerk response, as most posters have
already done.

Believing in the values of numbers, here is how I would first approach
your questioned. First, will the ball that you described actually
float. This is a buoyancy question that essentially deals with will a
object of the dimensions and mass that you have postulated sink or
float. If it diaplaces a volume of water less than its mass, it will
float; if it displaces a volume of water it will be neutrally
buoyant; if if diaplaces a volume of water less than its mass it will
sink.

Now, lets run the numbers...

Using the forumla V= 4/3 Pi x R^3, the radius of a ball 1-Cm in
diameter with a radius of .5 Cm, the volume is roughly 0.526 cubic
centimeters. Since its density is nearly twice that of water, it will
not float, but sink quickly to the bottom. (Not sure that I trust that
computation from the Net, but I'm tonight too tired to perform it
myself, so I got it using Google.

Remaining questions are pointless.

I'm surprise that none of the other possters on the newsgroup didn't
post this out to you previously Draw you own conclusions about other
posters, James, alway verify the information that I post (or that
anyone posts). In my case, it is as accurate as I can make it. I'm
not always correct, but am in most cases.

James, when you get into discussion resonances and stand waves in a
water of measurable depth, the computations become rather complex,
which I believe that this is a concept that you fully grasp. Quite
honestly, even considering the analysis and math gives me brain strain
that at my age my doctors have suggested that I avoid. Although I have
could have the walls covered with various photos and diploma wallpaper
I don't.

I prefer to thing of myself as an old New Jersey farmer and part-time
auto mechanic who has some knowlege of physics. Take this information
for what you believe it to be worth.

Harry C.






.

Relevant Pages

  • Re: Water wave question..
    ... half way normally just sitting there and has a mass of 1gram, ... OK James, and you already know what a stickler for details I am, I ... If it diaplaces a volume of water less than its mass, ... with the ruler I used and goofed up the measurement ...
    (sci.physics)
  • Re: No free lunch
    ... graduate, in order for your 45kg mass to float, it ... must displace 45kg of water. ... object must be displaced for it to float. ... only displaces 1/2 a cubic foot of water. ...
    (sci.energy.hydrogen)
  • Re: No free lunch
    ... A gallon of water weighs about 8.345 lbs ... allow the item to float when it can. ... Will 83.45 lbs of water lift a 100lb mass? ...
    (sci.energy.hydrogen)
  • Re: Water wave question..
    ... So a 1centimeter diameter hollow ball that has a mass of 1 gram is ... But it won't float because its density ... If I now also had to tell you that the air is compressed inside the sphere, ... James is playing upon your ignorance of bouyancy. ...
    (sci.physics)
  • Re: No free lunch
    ... graduate, in order for your 45kg mass to float, it ... must displace 45kg of water. ...
    (sci.energy.hydrogen)
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