Select the сorrect statements. check all that apply.
a) the milky way is not wider than it's thickness.
we see stars distributed more or less evenly across the sky.
shapley's 20th-century observations of globular cluster orbits, which center on a point about 30,000 light years from our sun, showed we weren’t in the center of the galaxy.
b) the milky way is much wider than it's thickness.
so it is a narrow band with many stars in it, while the sky outside the band has much fewer stars.
shapley's 20th-century observations of globular cluster orbits, which center on a point about 30,000 light years from our sun, showed we were in the center of the galaxy.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

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.

higher potential

explanation:

because it is in a high speed so it must move into a of high potential

1 is a answer of a question