A student stands in a school hallway. A wall separates a classroom from the student. The student in the hallway cannot see inside the classroom but
hears noises from within the classroom. Which of these best explains why the student hears the noises but cannot see into the classroom?
Sound waves are absorbed by the wall, and visible light waves are transmitted through the wall.
Sound waves are transmitted through the wall, and visible light waves are reflected by the wall.
Sound waves are reflected by the wall, and visible light waves are refracted by the wall.
Sound waves are reflected by the wall, and visible light waves are absorbed by the wall.
Answers: 2
Chemistry, 22.06.2019 01:30
An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.
Answers: 1
Chemistry, 22.06.2019 13:30
In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.
Answers: 2
A student stands in a school hallway. A wall separates a classroom from the student. The student in...
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