A stationary detector measures the frequency of a sound source that first moves at constant velocity directly toward the detector and then (after passing the detector) directly away from it. The emitted frequency is f. During the approach the detected frequency is f app and during the recession it is f rec. If ( f app f rec)/f 0.500, what is the ratio vs/v of the speed of the source to the speed of sound

the ratio of the speed of the source to the speed of sound = 2.47

Explanation: This question is solved by employing doppler effect formula.

The frequency of sound observed by the observer when the source of sound is moving toward him and the frequency of sound when it is moving away from him.

Please find the attached file for the solution

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

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )