Awireless transmitting microphone is mounted on a small platform that can roll down an incline, directly away from a loudspeaker that is mounted at the top of the incline. the loudspeaker broadcasts a tone that has a frequency of 1.000 × 104 hz, and the speed of sound is 343 m/s. at a time of 1.5 s following the release of the platform, the microphone detects a frequency of 9952 hz. at a time of 3.5 s following the release of the platform, the microphone detects a frequency of 9888 hz. what is the acceleration a (assumed constant) of the platform

Acceleration, a = 1.1 m/s²

Explanation:

Frequency of source,

Speed of sound, v = 343 m/s

Frequency of observer,

We know that acceleration a of the platform is :

..............(1)

The frequency detected by the microphone is :

At 1.5 seconds,

At 3.5 seconds,

So, equation (1) becomes :

So, the acceleration of the platform is 1.1 m/s². Hence, this is the required solution.

e) none of the above answers are correct

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.