Potential energy<span> is </span>energy<span> that is stored in an object. As the rubber band is released, </span>potential energy<span> is changed to motion. </span>Kinetic energy<span> is </span>energy<span> of motion. A rubber band flying through the air has </span>kinetic energy<span>.</span>
An ecosystem is the diversity of many communities of organisms where they interact with living as well as non living thing whereas community contains the variety of populations of different species. Hope this helps x
Assuming an ideal gas, the speed of sound depends on temperature
only. Air is almost an ideal gas.
Assuming the temperature of 25°C in a "standard atmosphere", the
density of air is 1.1644 kg/m3, and the speed of sound is 346.13 m/s.
The velocity can't be specified, since the question gives no information
regarding the direction of the sound.