The time that it takes a sound to decrease to 1/1000th of its original level is the reverberation time.
Reverberation time (RT) is that the time needed for the sound in a very area to decay over a selected dynamic vary, typically taken to be sixty decibel, once a supply is suddenly interrupted.
The reverberation time depends chiefly on a room's volume and space and on the absorption at the walls. usually absorption is frequency dependent and so the reverberation time of a space varies with frequency. Some materials that could be used to scale back reverberation are fibre board, serious curtains, plastics etc.
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<span>This would be considered a family under sociological terms. The parents and the children are living together, which differs from extended families, in which the children and parents do not share the same living quarters. Households, by definition, are made up of single persons or unrelated people living together in a communal-type setting, rather than a kinship setting.</span>
Answer:
Railways were vital to the growth and development of surrey.
Explanation:
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If you are referring to the southern United States, then the answer is true. The land in the south is good for growing cash crops like cotton and indigo. This lead to an agrarian economy in the south as opposed to an industrialized/manufacturing based economy in the north U.S.
Answer:
b. hypothesis
Explanation:
The statement, "We expect our study to show that students who sleep fewer than five hours the night be-fore the exam will perform more poorly than those who sleep more than five hours," would be considered a hypothesis.
A hypothesis is a proposed explanation for a phenomenon, a scientific guess, an idea or explanation that you test its validity through study and experimentation.
The statement is an example of a hypothesis that is subject to testing.
