1.When measuring a distance AB, the first taping pin was placed 1.5ft to the right of line AB and the second pin was set 1.5 ft leftof line AB. The recorded distance was 236.89 ft. ( Assume 3 tapedsegements, the first two 100 ft each.) Calculate the corrected distance.
2.A lake with a constant volume 10.0 x 106 m3 is fed by a pollution-free stream with a flow rate 50.0 m3/s. A factory dumps 5.0 m3/s of a nonconservative waste with concentration 100 mg/l into the lake. The pollution has a reaction rate coefficient K of 0.25/day. Assume the pollutant is well mixed in the lake. Find the steady-state concentration in the lake.