For any material,how does the specific heat capacity C is calculated practically?
FOR fitting window frame can't we choose such material which has same coefficient that of glass.If yes give example?
In hole expansion we can say that hole is expanding,although whole every ring expands,but when metal surface is given heat the hole can expand by changing its shape.SO can now also we can say only that hole is expanding?
Well, Sohail, the answer to your first question is given in many text books. Essentially, the idea is, heat energy gained by an object = heat energy lost by another object touching the first one. If we know the mass of the unknown substance, the mass and specific heat capacity of the second (known) substance, and the temp. difference, we can calculate the specific heat capacity of the unknown substance. For more info, check page 40 of H.C. Verma, vol. 2 (Calorimetry).
As far as I know, every substance has its own unique coefficient of expansion (though by mixing substances, you MIGHT get near to the required coefficient value). So, unless you want to use a glass frame for the glass window, I don't think there is any other substitute.
I couldn't understand what u meant by the 3rd question.......can u explain it more clearly?