27. Improvements in space technology have greatly helped scientists better understand the stars, planets, and other celestial bodies in our universe. How do technological advances in astronomy benefit our society on Earth?

A. Technological advancements in astronomy allow scientists to better understand Earth and find solutions to
preventing global warming

B. Technological advancements in astronomy have led to the development of thousands of products such as
new materials, medical devices, and communications satellites.

C. Technological advancements in astronomy have led to the development of many theories of how the
universe began and how the Earth formed.

D. Technological advancements in astronomy have helped improve our society's economy.

B

Explanation:

Technological advancements in astronomy have led to the development of thousands of products such as

new materials, medical devices, and communications satellites.

For example, the production of instruments like telescopes, microscopes, and other measuring devices now enables us to identify things that we couldn't examine with the naked eye.

Similarly, the development of communication satellites has led to the emergence and improvements in the mobile network industry.

i think the answer is a and b

i wish you luck

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.