Because sound moves faster in warm air than colder air, the wave bends away from the warm air and back towards the the ground.
To find the displacement between t=0 and t=1, we want to plug 0 & 1 into the equations, then find the different in the answers.
<u>When t = 0:</u>
x = 4 cos(π(0)+π/4) → π · 0 = 0, so therefore:
x = 4 cos (π/4) → cos (π/4) = √2/2
x = 4 (√2/2)
x = 4√2/2 → 4 divided by 2 = 2, so we can simplify this to
x = 2√2
<u>When t = 1:</u>
x = 4 cos(π(1)+π/4) → π · 1 = π, so therefore:
x = 4 cos (π + π/4) → π + π/4 = 5π/4, so therefore
x = 4 cos (5π/4) → cosine of 5π/4 = -√2/2
x = 4 · -√2/2
x = -4√2/2 → -4 divided by 2 = -2, so we can simplify this to
x = -2√2
<u>Answer</u>: Then, we find the difference between x(0) and x(1), which is x(1)-x(0) =
-√2/2 - √2/2 = <u>-√2</u>
Do you mean acute illness ?
Then the answer would be flushed face after exercise.
Answer: “The Yellow Wallpaper”, by Charlotte Perkins Gilman, is a symbol of the social strucutre that confines women to domestic submission.
Explanation:
The wallpaper appears simply unpleasant at first because it´s ripped and stained. But eventually, it´s formless design fascinates the narrator, who tries to find a pattern in it. After hours of staring, she finds a hidden pattern that shows a woman crawling around the wallpaper trying to escape. Finally, the wallpaper embodies the family structure and social tradition that the narrator herself feels trapped in, which will finally push her into an obsessive delusion.
