How many dots belong in the electron dot diagram of a boron (b) atom? a. three b. five c. eight d. thirteen

the answer is A. three

             Three dots belong in the electron dot diagram of a Boron.

                         In drawing Lewis structures the dots presented on the atoms are the valence electrons present in the valence shell of that particular atom. Therefore, the number of valence electrons in an atom can be calculated from its electronic configuration. In given case, the electronic configuration of Boron with atomic number 5 and number of electrons = 5 is as follow,

                                               1s², 2s², 2p¹

As the valence shell is 2 and there are three electrons present in it hence the following electron dot diagram for Boron can be drawn.

where is the circuit diagram ?

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.