Passengers in an auto traveling at 16.4 mls toward the east hear a siren frequency of 1000 H2 from an emergency vehicle approaching them from behind at a speed {relative to the air and ground} of 33.3 mls. The speed of sound in air is 340 m/s. Ia] What siren frequency does a passenger riding in the emergency vehicle hear? [b] What frequency do the passengers in the auto hear after the emergency vehicle passes them? [a] Number Units Hz v [b] Number Units H: v Hint Assistance Used (3} Did you substitute into the general Doppler equation? The detector speed is away from the source. What sign does it take in the numerator? The source speed is toward the detector. What sign does it take in the denominator? [b] Reconsider the "away" and \"toward" Passengers in an auto traveling at 14.6 mls toward the east hear a siren frequency of 1010 Hz from an emergency vehicle approaching them from behind at a speed {relative to the air and ground} of 3512 mfs. The speed of sound in air is 340 m/s [a] What siren frequency does a passenger riding in the emergency vehicle hear? [b] What frequency do the passengers in the auto hear after the emergency vehicle passes them? {ID} Number 9.55E2 Units Hz v Passengers in an auto traveling at 17.1 mls toward the east hear a siren frequency of 935 Hz from an emergency vehicle approaching them from behind at a speed {relative to the air and ground} of 40.1 mfs. The speed of sound in air is 340 mfs. (a) What siren frequency does a passenger riding in the emergency vehicle hear? lb} What frequency do the passengers in the auto hear after the emergency vehicle passes them? [a] Number 1.06E3 Units Hz v [b] Number 9.25E2 Units H: v