You are assessing the performance of a CSTR that is 60 m long, 5 m wide, and 2 m deep. It receives 250 m3/d of wastewater with a BOD5 of 325 mg-BOD5/L. The following microbial kinetic constants were determined in the lab: Ks = 76 mg-BOD5/L kd = 0.08 d-1 μm = 1.1 d-1 Y = 0.80 mg-VSS/mg-BOD5 (a) What is the efficiency of the CSTR in terms of BOD5 removal?

What precautions should you take to prevent injuries when dealing with heavy loads?

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed