[" A steel bar "10.0cm" long is welded ond to end to a copper bar "20.0cm" long.Both bars are "],[" insulated perfectly on their sides.Each bar has a square croction,"2.00cm" on a side.The "],[" tree ond of the steel bar is maintained at "100^(@)C" by placing it in contact with steam,and the fre frefer "],[" tree ond of the steel bar is maintained at "10^(@)C" by placing it in contact with ice.Find the temperatur "],[" at the junction of the two bars and the total rate of heat flow."]

A steel bar 10.0 cm long is welded end to end to a copper bar 20.0 cm long. Both bars are insulated perfectly on their sides. Each bar has a square cross-section, 20.00 cm on a side. The free end of the steel bar is maintained at 100^(@)C by placing it in contact with steam, and the free end of the copper bar is maintained at 0^(@)C by placing it in contact with ice. find the temperature at the junction of the two bars and the total rate of heat flow.

A steel bar 10.0 cm long is welded end to end to a copper bar 20.0 cm long. Both bars are insulated perfectly on their sides . Each bar has a separate cross-section, 2.00 cm on a side . The free end of the steel bar is maintained at 100^(@)C by placing it in contact with steam and free end of the copper bar is maintained at 0^(@)C by placing it in contact with ice . find the temperature at the junction of the two bars and the total rate of heat flow . thermal conductivity of steel = 50.2 Wm^(-1)K^(-1) .thermal conductivity of copper =385 Wm^(-1)K^(-1) .

A steel bar 10.0 cm long is welded end to end to a copper bae 20.0 cm long. Both bars are insulated perfectly on their sides . Each bar has a separate cross-section, 2.00 cm on a side . The free end of the steel bar is maintained at 100^(@)C by placing it in contact with ice . find the temperature at the junction of the two bars and the total rate of heat flow . thermal conductivity of steel = 50.2 Wm^(-1)K^(-1) .thermal conductivity of copper =385 Wm^(-1)K^(-1) .

A steel bar can be magnetized by passing alternating current through a coil wound on the steel bar.

A bar of steel can be permanently magnetised by

A bar of copper of length 75 cm and a bar of steel of length 125 cm are joined together end to end . Both are of circular cross - section with diameter 2 cm . The free ends of the copper and steel bars are maintained at 100^(@)C and 0^(@)C respectively . The surface of the bars are thermally insulted . What is the temperature of the copper - steel junction ? What is the heat transmitted per unit time across the junction ? Thermal conductivty of copper 9.2 xx 10^(-2) k cal m^(-1) ""^(@)C^(-1)s^(-1) and that of steel is 1.1 xx 10^(-2)k cal m^(-1)s^(-1) (@)C^(-1) .

A bar of copper of length 75cm and a bar of steel of length 125cm are joined together end to end. Both are of circular cross section with diameter 2cm . The free ends of the copper and the steel bars are maintained at 100^(@)C and 0^(@)C respectively. The curved surface of the bars are thermally insulated. What is the temperature of the copper-steel junction? What is the amount of heat transmitted per unit time across the junction? Thermal conductivity of copper is 386Js^(-1)m^(-1) C^(-1) and that of steel is 46Js^(-1)m^(-1) C^(-1)

One end of a 600 cm long steel bar is fixed rigidly and the other end rests on a lever, 10 cm away from its fulcrum. The lever turns through 2^(@) when the bar is heated up to 50^(@)C. Find the increase in length of the bar and its coefficient of linear expansion.

A uniform copper bar 100 cm long is insulated on side, and has its ends exposed to ice and steam respectively. If there is a layer of water 0.1 mm thick at each end, calculate the temperature gradient in the bar. K_(Cu)=1.04 and K_(water)=0.0014 in CGS units.