On Canadian highways, the speed limit
A. is usually posted as 100 km/hr (62 mi/hr)
B. is usually posted as 50 km/hr (31 mi/hr)
C. ranges from 50 km/hr (31 mi/hr) to 100 km/hr (62 mi/hr)
D. varies significantly according to province
Answer: A
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An 1880 MW wet-bottom, wall-fired sub-bituminous coal power plant emits sulfur oxides, nitrogen oxides, and carbon monoxide into the atmosphere in a rural area. The plant uses coal with a 4% sulfur content. The plant operates around the clock, 365 days a year, 24 hours per day. The 25 m3/s (actual) of exhaust from the plant exits the 1-m-diameter stack at 800°C. The stack is 25 m high. The air pressure within the stack is essentially equal to the ambient air pressure of 1 atm. The average ambient temperate measure at the stack height is 20°C. The average temperature measured at 110 m on a nearby radio tower is 20.0°C. The prevailing wind speed is 2 m/s. Determine:
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