Dada la ecuacion de las rectas determine: El punto de interseccion

How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation