The air velocity in the duct of a heating system is to be measured by a pitot-static probe inserted into the duct par- allel to the flow. if the differential height between the water columns connected to the two outlets of the probe is 2.4 cm determine (a) the flow velocity and (b) the pressure rise at the tip of the probe. the air temperature and pressure in the duct are 45°c and 98 kpa, respectively

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.