Two trucks with sirens move toward you from opposite directions, each emitting a 1000 Hz sound. Truck 1 moves at 20 m/s and truck 2 moves at a slower speed. The speed of sound is 340 m/s. 16. You are stationary and observe a beat frequency of 26 Hz from the two sounds. How fast is truck 2 moving

Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?