Un cuerpo que pasa 40 N se desliza sobre una mesa horizontal sin rozamiento a una velocidad de 4 m/seg., se aplica una fuerza constante cuya dirección coincide con la del vector velocidad, después de recorrer 5 m la velocidad es de 12 m/seg. ¿Cuál es módulo de la fuerza?​

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;