i need correct answer for this physics question.

Dont give wrong answer

Do not use AI

4-28. 4-29. 4-30. A maximum of 10 smokers are anticipated in a smoking room and each is expected to con- tribute about 150 g/min of environmental tobacco smoke (ETS) to the space. It is desired to hold the particulate level of ETS below 180 g/m? using filters with an effective efficiency of 80 percent and an intake of outdoor air at the rate of 20 cfm per person. Assuming a ventila- tion effectiveness of 0.85 and the filter located downstream of the mixed recirculated and out- door air, determine the required rate of supply air to the room. Solve Ex. 4-4 assuming that the filter is in location A in Fig. 4-9. Solve Problem 4-28 assuming that the filter is in location A in Fig. 4-9. (1 - R)Q, Q = volumetric flow Subscripts C = contaminate concentration f = filter E = efficiency or effectiveness o = outdoor F, = flow reduction factor r = return N_ = contaminate generation rate 5s = supply R_ = recirculation flow factor v = ventilation