A pressão atmosférica considerada normal tem, em unidades SI, o valor aproximado de 101 000 Pa. Calcula o valor da força que é exercida pelo ar atmosférico numa área de 600 cm2.

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

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Properties seen when one one substance changes to another are known as properties