Un neumático contiene 2.6 ft 3 de aire a una presión manométrica de 70 lb/pulg 2 . Que volumen de aire a una presión de una atmosfera se requiere para llenar el neumático si no cambia la temperatura. (La presión atmosférica del lugar es de 14.7 lb/pulg 2 ) 1atm=14.7 lb/pulg2

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards