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

Asimple speed reducer is composed of 2 spur gears. the pinion gear has a pitch diameter of 0.75" and 36 teeth while the driven gear has a pitch diameter of 4.0" and 192 teeth. a)-what is the diametral pitch of each gear? b)-if an electric motor rotating ccw at 3000 rpm is coupled to the pinion, what is the rotational speed of the driven gear? c)-if the torque delivered to the pinion is 1 n-m, what is the torque on the driven gear? d)-what is the power transmitted by the gear train?