Calculate the pressure amplitude
A sound waves in air at 20* C has frequency of 150 Hz and a displacement amplitude of 5.00 x 10^-3 mm. For his sound wave calculate the a) pressure amplitude (in Pa) b) intensity (in W/m^2) c) sound intensity level (in decibels).
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Margaret is trying to decide whether or not to place funds in a qualified tuition program. Her son will be attending college in four years. She is in the 35% marginal tax bracket and she believes she can earn 7% before tax return on alternative in
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