India's first Tidal power plant

The Indian state of Gujarat has cleared plans for the installation of India’s first commercial tidal power plant. The proposal to build a tidal power plant with an initial capacity of 50 MW was made by London-based marine energy developer Atlantis Resources Corporation.

The company has signed a MoU with the government of Gujarat to set up the power plant by 2013. The plant is likely to be scaled up to a capacity of 250 MW at a cost of about $165 million. The project will be developed in partnership with the Gujarat Power Corporation Limited.

Describing the current global scenario with regard to the total installed capacity, Atlantis’ CEO said that the sector is in its nascent stages and compared it with the early stages of wind energy growth ten years ago.

The capital costs involved in tidal power plants is very high largely due to the extensive civil works required. The average break year time for such power plant varies from 8 to 12 years. Therefore, for the project to be commercially viable the tariffs are need to be attractive.

Handshake Problem...

GKB_Q98
Q- At a party,every1 shake hands with everybody else.There r 66 handshakes
How many people r there?



Ans- With two people, there is one handshake.
With three people, there are three handshakes.
With four people, there are six handshakes.
In general, with n+1 people, the number of handshakes is the sum of the first n consecutive numbers: 1+2+3+...+n.
Since this sum is n(n+1)/2,
we need to solve the equation n(n+1)/2 = 66.
This is the quadratic equation n²+n-132 = 0.
Solving for n, we obtain 11 as the answer and deduce that there were 12 people at the party.

How many Squares on a Chessboard?

How many Squares on a Chessboard?

Although this investigation seems quite simple, it requires a methodical approach if the correct answer is to be attained.
As the title suggests, the investigation involves children finding out how squares there are on a chessboard. You might think that there are only 64, but you would be wrong...
The diagram below shows that there are indeed 64 squares, you there are also some more...

Don't forget the one large square (shown in red here)...

And, also the 16 two-by-two squares shown below (although these aren't the only 2x2 squares!)...

There are many more different-sized squares on the chessboard.
The complete list of answers is shown below:

1, 8x8 square

4, 7x7 squares

9, 6x6 squares

16, 5x5 squares

25, 4x4 squares

36, 3x3 squares

49, 2x2 squares

64, 1x1 squares

Therefore, there are actually 64 + 49 + 36 + 25 + 16 + 9 + 4 + 1 squares on a chessboard! (in total 204).