Someone has suggested that the air standard otto cycle is more accurate if the two isentropic processes are replaced with polytropic processes with a polytropic exponent of n = 1.3. consider such a cycle when the compression ratio is 8, p 1 is 95 kpa, t1 is 15 c and the maximum cycle temperature is 1200 c. determine the heat transferred to and rejected from this cycle as well as the cycles thermal efficiency. use constant specific heats at room temperature.

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.