Calcula la densidad del hierro , si 393 g ocupan un volumen de 50 ml

A50.0-n box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. you observe that at one instant the box is sliding to the right at and that it stops in 2.25 s with uniform acceleration. what magnitude force does friction exert on this box

Describe the function of the endomembrane system? what organelles are involved?

If y gets smaller as x gets bigger and y have an relationship?