A brass and an iron rod are each of one metre long at `0^@C`. Find the difference in their lengths at `100^@C`. Coefficient of linear expansion of brass is 0.000019 and of iron = 0.000012.

A brass wire 1.8 m long at 27^@C is held when taut with little tension between two rigid supports. If the wire is cooled to a temperature - 39^@C , what is the tension developed in the wire, if tis diameter is 2.0 mm? Coefficient of linar expansion of brass = 2.0 xx 10^5 ^@C^-1 , Young's modulus of brass = 0.91 xx 10^11 Pa .

An equilateral triangle ABC is formed by two Cu rods AB and BC and one Al rod. It is heated in such a way taht temperature of each rod increases by DeltaT . Find change in the angle ABC. [Coeff. of linear expansion for Cu is a_1 , Coeff. of linear expansion for Al is a_2l

A brass rod of length 50 cm and diameter 3.00 mm is joined to a steel rod of the same length and diameter. What is the change in length of the combined rod at 250^@C , if the original lengths are at 40.0^@C ? Is there a 'thermal stress' developed at the junction? The ends of the rod are free to expand coefficent of linear expansion of brass = 2.0 xx 10^-5 ^@C^-1 , steel = 1.2 xx 10^-5 ^@C^-1 ).

A steel tape 1 metre long is correctly calibrated for temperature of 27.0^@C . The length of a steel rod measured by this tape is found to be 63.0 cm on a h ot day when the temperature is 45^@C . What is the actual length of the steel rod on that day? What is the length of the same steel rod on a day when the temperature is 27.0^@C ? Coefficient of linear expansion of steel = 1.20 xx 10^-5 C^-1 .

Find the coefficient of x^(10) in the expansion of (2x^(2)-(3)/(x))^(11), x ne0

The resistance of a wire is 5 ohm at 50^@C and 6 ohm at 100^@C. The resistance of the wire at 0^@C