grace rides her bike 41 miles with a constant speed of 12 mph and another 36 miles with a constant speed of 12 mph.what is her average speed for the total trip
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When compression takes place in the medium, the density and pressure of the medium increase. This increase and decrease in density and pressure are temporary. Thus, compression is called the region of high density and pressure. Rarefaction is called the region of low density and pressure.
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