Find the energy stored per unit volume of a steel wire of length 1m when it is stretched by 0.2mm. Given Y for steel =`2.1 x 10^11 N/m^2`

The energy stored per unit volume in copper wire, which produces longitudinal strain of 0.1% is (Y = 1.1 xx 10^(11) N//m^(2))

A copper wire and steel wire both have the same length and radius are joined end to end, when the composite wire is hung from a rigid support, and the load attached at the free end, the increase in the length is found to be 1cm. Find the increase in length of copper steel wire. (Y for copper = 1.2 xx 10^11 N//m^2 , Y for steel = 2.1 xx 10^11 N//m^2)

A steel wire 2 mm in diameter is just stretched between two fixed points at a temperature of 20^(@)C. If the temperature falls to 10^(@)C, then the tension in the wire is (The coefficient of linear expansion of steel = 11xx10^(-6)//^(@)C and Y for steel 2.1 xx10^(11)N//m^(2))

The pressure that has to be applied to the ends of a steel wire of length 10cm to keep its length constant when its temperature is raised by 100^@C is : (For steel Young's modulus is 2xx10^11 Nm^-2 and coefficient of thermal expansion is 1.1xx10^-5K^_1 )

An aluminium wire and a steel wire are of the same length and crosssection and are joined end to end. The composite wire is hung from a rigid support, a load is suspended from the free end. If the increase in the length of composite wire is 2.77 mm, find the increase in length of each wire. ( Y_A = 7 xx 10^10 N/m^2) (Y steel= 2 xx 10^11 N//m^2)

Solve the following problems : What will be the increase in length of a steel rod of length 0.5 m , when its temperature is increased by 60 ⁰C ? The coefficient of linear expansion of steel is 0.000013 ( 1/⁰C) .

Determine the resistance of a copper wire having, a length of 0.1 km and diameter of 0.5 mm. [Given: Resistivity of copper = 1.7 times 10^(-8) Omega m ]

Determine the resistance of a copper wire having a length of 1 km and diameter of 0,5 mm. (Given: rho=Resistivity of copper =1.7 times 10^(-8) Omega m )

Energy density of wire is 0.25 J//m^(3), when its extension is 0.2 cm. Find density of wire, when elongation is 1 cm