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Apr 28th, 2007
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Re: Physics Game

Yeah, we've been through this. Enough with the overanalyzing and "That's an impossible question" statements. It's just annoying, especially when the question can be answered and agreed upon the same by everyone.
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Posting Virtuoso
sk8ndestroy14 is offline Offline
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Apr 28th, 2007
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Re: Physics Game

What do you mean when you say the Earth like gravity is 10N? I don't think that's supposed to be measured in newtons.
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Posting Virtuoso
sk8ndestroy14 is offline Offline
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Apr 28th, 2007
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Re: Physics Game

lol.. hmm, I guess this question is unanswerable.. There is no real answer if g= 10N.. The question doesn't even make any sense..

.. just a very small taste of your own jackass medicine
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joshSCH is offline Offline
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Apr 28th, 2007
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Re: Physics Game

Gravity is always measured in newtons in the UK? maybe the US is different?
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jbennet is offline Offline
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Apr 28th, 2007
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Re: Physics Game

gravity (g) is an acceleration, and is measured in m/s^2
Last edited by joshSCH; Apr 28th, 2007 at 3:30 pm.
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joshSCH is offline Offline
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Apr 28th, 2007
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Re: Physics Game

Last time i studioed physics gravity was a force?

Weight = mass x gravity

So if i i have a mass of 8 N and gravity is 10 N then i have a weight of 80kg
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jbennet is offline Offline
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Apr 28th, 2007
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Re: Physics Game

Oh, 10 m/s^2. Thanks for pointing that out.
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Rashakil Fol is offline Offline
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since Jun 2005
Apr 29th, 2007
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Re: Physics Game

The strength of a classical gravitational field is measured in N kg ^ -1 (Newtons per kilogram). On the surface of the earth this is measured to be about 9.8 N kg ^ -1. Apologies if this has already been said in the thread, but I'm in an internet cafe so in a rush. If no one minds I'll set another question seeing as the last one apparently went a bit "stale":

An imaginary new HD video system (called Purple - Ray) has been launched and the laser it uses to read the disks has a wavelength of 400 nm (4 * 10 ^ -9 m). The lens used has a numerical appature of 1.5. What is the minimum size the markings on the disk (that represent the data) could have and still be resolved by the laser?

Note: numerical aperture is a dimensionless quantity, hence the lack of a unit.

Steven.
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Posting Whiz in Training
Mushy-pea is offline Offline
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since Jun 2006
May 2nd, 2007
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Re: Physics Game

I've always known gravity to be measured in m/s^2. Of course the force of gravity could be 10N but that is completely dependent on the mass of the object that gravity acts on. If you use the equation F = (m1*m2*G)/(d^2) then G isn't measured in newtons or m/s^2. You get (Nm^2)/(kg^2). Unless I did something wrong.
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Posting Virtuoso
sk8ndestroy14 is offline Offline
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May 3rd, 2007
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Re: Physics Game

Thats G, the universal Gravitational Constant ~ 6.673 x10^-11
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joshSCH is offline Offline
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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
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