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## #1 2006-04-21 02:32:29

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

### proof question.

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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## #2 2006-04-21 03:16:11

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

### Re: proof question.

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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## #3 2006-04-21 03:31:02

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

### Re: proof question.

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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## #4 2006-04-22 07:17:27

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

### Re: proof question.

lol stole my thread!

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## #5 2006-04-24 04:18:16

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

### Re: proof question.

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

Kind Regards,

dadon

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