The security alarm on a parked car goes off and produces a frequency of 1440 Hz. The speed of sound is 343 m/s

The security alarm on a parked car goes off and produces a frequency of 1440 Hz. The speed of sound is 343 m/s. As you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 164 Hz. At what speed are you driving?

Im just hoping for the neighbors sake that that stupid alarm doesnt go off in the middle of the night and wake up he whole freakin neighborhood.
As if it keeps the car safe HA

X10 Alarm Security Kit

Toxic Waste Security Warning Alarm Cookie Jar – Bio-hazard Barrell $15.95 Who’s trying to steal those cookies?? They’ll never get away with it! If the biohazard symbol doesn’t scare them away, the noise will! Light sensitive alarm sounds a loud warning and starts the red light spinning when lid is lifted. Not just for treats; stash anything you want left alone! Metal with plastic lid. With on/off switch under lid. Dishwasher safe. Uses 2 AAA batteries, not included. …

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Burglar Deterrent – Home Protection Audio CD $16.95 The new “Burglar Deterrent Home Protection Audio CD” gives homes an additional layer of protection from intruders when you’re away. Simply playing the digitally engineered “Burglar Deterrent Home Protection Audio CD” gives the impression to intruders that the home is occupied. Imagine having a virtual house guest 24 hours a day- the “Burglar Deterrent Home Protection Audio CD” adds another layer o…

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