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**dadon****Member**- Registered: 2006-04-12
- Posts: 14

Hey guys,

Needed some help on 2 proof questions:

1) Prove that the centre of mass of a uniform wire in the form of a semi-circle of radius r is at a distance 2r/pie (sorry don't know how to insert symbol) from the centre.

2) Prove that the centre of mass of a uniform semi-circular laminar of radius r is at a distance 4r/3pie from the centre.

I hope you guys can help. Thanks

kind regards,

dadon

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**pgonzales****Member**- Registered: 2006-04-21
- Posts: 1

In a FY 2/03 budget, directed projects amount per contract were $250,000. In Fy 03/04, this amount increased to $287,500. What is the amount of the increase?

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,812

pgonzales,

the amount of increase in percentage is

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**dadon****Member**- Registered: 2006-04-12
- Posts: 14

lol stole my thread!

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**dadon****Member**- Registered: 2006-04-12
- Posts: 14

Still having promblem with the proof questions! I would be greatly if someone can help

Kind Regards,

dadon

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