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, 21.06.2019 19:00
Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips
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Chemistry, 22.06.2019 14:30
How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.
Answers: 2
Chemistry, 23.06.2019 00:30
Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6
Answers: 1
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