The melting temperature of pure titanium = 1668°c, its density = 4.5 g/cm^3, specific heat = 0.544 j/gºc, and heat of fusion = 419 j/g. assume specific heat has the same value for solid and molten metal. the pouring temperature for titanium is 1800°c, and the starting temperature = 25°c. estimate the (a) energy for heating unit mass (1 g pure titanium) to pouring temperature and (b) total energy to heat 80 kg of the metal.

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.