9
pensities of Common Liquids
Substance
Density (g/cm)
water
1.00
cooking oil
0.894
corn syrup
1.36
The mass of an empty container is measured and
found to be 55.75 g. The container is filled to the
rim with water. Its mass is measured again and
found to be 105.75 g. The container is emptied
and dried with a paper towel to remove any
traces of water. It is then filled with an unknown
liquid. The new mass is 123.75 g. Use
calculations to determine if the unknown liquid
is cooking oil or corn syrup.

before we can answer, we have to see the choices that are printed there with the question.   that's the only way we can point you to the correct one.

electromagnetic waves travel through space with vacuums. give me brainliest if right.

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.