after singing for a few minutes, the soloist rejoins the choir. a second choir, consisting of 90 additional singers, then joins in. each group of 10 singers sings with the same intensity as the first 10 person choir. now how many decibels of sound intensity are being produced?

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selfconfidence777 · Answer

a few weeks later, you attend a rock concert at which the band plays at 120db. how many times more intense is the rock concert than the choir concert?

selfconfidence777 · Answer

the electromagentic spectrum includes a number of different forms of radiation.
so describe at least two similarities between ultraviolet rays and microwaves.

selfconfidence777 · Answer

@Rabya!