The elevator accelerates upward (in the positive direction) from rest at a rate of 1.8 m/s2 for 2.1 s. Calculate the tension in the cable supporting the elevator in newtons.

Which best represents the law of conservation of mass ?

Most of the volume of an atom is occupied by the

The air in an automobile tire with a volume of 2.60 ft3 is at 70°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ft⋅lbflbm⋅r(1 psia144 lbf/ft2) = 0.3704 psia⋅ft3lbm⋅r the amount of air that must be added to raise the pressure is lbm