Which of the following is most relevant to a life-cycle assessment of the construction phase? the VOCs released by the application of paints and sealants

the amount of energy consumed by a building’s HVAC system

the carbon emissions of building employees commuting to work

the cost of maintaining the building’s exterior architectural glass

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.