Generally, sound from a speaker decreases by. that the distance from the speaker is doubled. decibels each time a. 3 b. С. d. 12

There are 2 cars on the road. Car X is moving at 72 km/h and car Y is moving at 90 km/h, approach each other. Car X honks with a frequency of 650 Hz. Given the speed of the sound waves in air is 350 m/s, then what is the frequency of sound heard by the driver of car Y? O None of these O 738.6 Hz O 750 Hz O 600 Hz O 700.6 Hz

Hello. I am stuck on this problem. Could you guide me through it? Thank you

Hi, i just need some more detail in relation to the answer provided. In step 3 the stated Zlv= 71.853∠26.697° Ω   Then in step 4: If = V/Z =24/56.454  How has "Z" changed from 71.853 to 56.454. Thanks