Scientific cosmology choose one: a. investigates the overall structure and history of the universe. b. pertains to legends and verbal history about the beginnings of the universe. c. proves the big bang theory. d. states that the two basic entities of the universe are heat and light.

A. investigates the overall structure and history of the Universe.

Explanation:

Astronomy is the branch of natural science that studies the objects of a celestial nature.

Cosmology is a part of astronomy that examines the origin and the how the universe changes with the passage of time. The model which is widely accepted as how the universe came into being is the Lambda-CDM model.

According to the Lambda-CDM model the universe consists of cold dark matter, matter and dark energy.

i think its c if i'm wrong

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.