Piano strings vibrate at their natural frequency

A. True
B. False

What is the molar mass of potassium nitrate, kno3

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line