The security alarm on a parked car goes off and produces a frequency of 813 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 72.1 hz. at what speed are you driving?

Which composition of water moves to begin a deepwater current?

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?

The ima of the following pulley system is