Can someone answer this, i asked it before but someone gave me the wrong answer

when cold air masses move over the warm water of a large lake during the winter, clouds often form above the lake. how would this cloud formation most likely affect areas downwind of the lake?

areas downwind of the lake would become very dry and hot.

areas downwind of the lake would become much less windy.

areas downwind of the lake would receive precipitation.

areas downwind of the lake would experience unseasonably warm weather.

Areas downwind of the lake would receive precipitation.

which three statements are true about all alloys?

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.