B.) <span>The amp is the unit for "Current"
Hope this helps!</span>
By tightening a string you are actually putting more stress on the string you are giving it a new frequency that isn't natural.
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Dr. Inge discovered the make up of the earths inner core by studying how an earthquakes waves bounced off the core. And Inge Lehmann was studying the waves of a 1929 earthquake when she found them acting inconsistently with solid mantle crust
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