Define loudness and intensity of sound. How are the two concepts related?
What is the unit of intensity of sound?
At what decibel level do sounds start to become harmful to the ears and hearing?Relate amplitude and distance to the intensity and loudness of sound

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that  the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.

Hi. i believe this is called a scientific  theory.cheers!

Answer4 million;