Answer:
osmosis is the movement of water molecules from a solution with a higher concentration to a lower concentration through a partially permeable membrane.
Answer:
Explanation:
Sounds have basically two characteristics: pitch and loudness. The pitch is the ear's method of informally measuring how close together waves peaks and valleys are. The closer they are, the higher the pitch.
What this write up says about loudness is really amplitude. Amplitude is the height of the peaks from the neutral position. So just by varying the height of the waves and the closeness they are to each other determines the multitudes of the various sounds that we hear -- from very loud or very soft and from very high pitched to a very low rumble.
There is another property that's extremely important and that is what is carrying the sound. The speed that sound travels is determined by what is carrying the waves. If sound is carried by a steel pipe, the sound moves much faster through the pipe than it would if it is carried through air. Movies make quite a todo about people putting their heads to the tracks to see if they hear a train going somewhere on the tracks. It's really just the fact that sound travels through solids better than through air and they can hear the train long before they can see it.
Answer:
The fact that Laurie's mother doesn't realize that Laurie is Charles develops the story's theme in the sense that:
A. The mother's fascination with Charles's behavior and excuses for Laurie's home behavior develop the theme that parents are often blind to their own children's faults.
Explanation:
This question is about the short story "Charles" by author Shirley Jackson. It is told from the perspective of Laurie's mother. Each day, coming back home from kindergarten, her son Laurie tells a different story about a boy named Charles who misbehaves at school. Laurie himself is misbehaving at home - being impolite, ignoring his parents, mocking them... Yet, <u>his mother and father never make the connection that Laurie is lying about the existence of this other kid. They become so fascinated about Charles, so eager to meet the mother of such a troublemaker, they don't realize their own son is Charles. They even take advantage of Charles's "existence" to justify Laurie's bad behavior, claiming Charles is influencing him. Blind to their own son's faults, it is only at the end of the story that the mother is told by Laurie's teacher that there is no Charles in their classroom.</u>
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