What is the ratio of the final sound intensity
The volume control on a stereo amplifier is adjusted so the sound intensity level increases from 23 to 63 dB. What is the ratio of the final sound intensity to the original sound intensity?
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How have wars shaped American History since 1865? Discuss the effects of wars on American politics, economics, and society?
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The charge and the mass of an alpha particle are = 3.20×10^-19 C and = 6.68×10^-27 kg , respectively. What is the value of the change in potential energy of the alpha particle?
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The security alarm on a parked car goes off and produces a frequency of 967 Hz. The speed of sound is 343 m/s. As you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 95 Hz. At what speed are you drivin
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