Acoal-fired power plant with effective stack height of 100 m emits 1.2 g/s of so2 per mw of power delivered. if winds are assumed to be 4 m/s at that height and just over 3 m/s at 10m, how big could the plant be (mw) without having the ground level so2 exceed 365 μg/m3? (first decide which stability classification leads to the worst conditions.)

Why are graphs useful when interpreting data

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)