What is the fundamental frequency of a 2.30 m -long aluminum rod? the speed of sound in aluminum is 6420 m/s?

d) the number of neutrons plus the number of protons

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d