Determine the capacity for a two-lane approach to a signalized intersection that gets 45 seconds of green out of a cycle length of 100 secs. Studies show that the saturation discharge headway at the intersection is equal to 2.1 secs. Assume that the start-up lost time is equal to 2 secs, the clearance lost time is equal to 1.2 secs, and that the duration of the yellow interval is equal to 3.5 secs.

Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.