Using the formula velocity = distance/time, how fast does sound travel in air at 20 degrees C given a distance of 500 m and 3.92 seconds. A- 3.92
B- 127 m/s
C- 2,941 m/s
D- 746 m/s

B : 127m/s

Explanation:

= 500 ÷ 3.92

= 127.5

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.