onsider a plane composite wall that is composed oftwo materials of thermal conductivitieskA0.1 W/mKandkB0.04 W/mK and thicknessesLA10 mm andLB20 mm. The contact resistance at the interfacebetween the two materials is known to be 0.30 m2K/W. Material A adjoins a fluid at 200C for whichh10W/m2K, and material B adjoins a fluid at 40C forwhichh20 W/m2K.(a) What is the rate of heat transfer through a wall thatis 2 m high by 2.5 m wide?(b) Sketch the temperature distribution

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.