The discharge from the renenutet sugar beet plant causes the do at the critical point to fall to 4.0 mg · l−1. the meskhenet stream has a negligible bod and the initial deficit after the river and wastewater have mixed is zero. what do will result if the concentration of the waste (lw) is reduced by 50%? assume that the flows remain the same and that the saturation value of do is 10.83 mg · l−1 in both cases.

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.