Consider the following two situations in which the siren of ambulance from Mankweng hospital produces a sound with a frequency of 900 Hz. Use 20.4k(m)/(m)in as the velocity of sound in Mankweng.
Consider the following two situations.
The ambulance is speeding at Vs/3 towards an injured person at Paledi mall
The injured person is being rushed at Vs/3 to the waiting ambulance
The frequencies of sound heard by the observers in the two situations are: _________.