Answer: f = 4 Hz i think
Explanation:
sorry i dont rember (cant type lol)
Answer:
a) 
b) 
Explanation:
From the question we are told that:
Velocity of eagle 
Frequency of eagle 
Velocity of Black bird 
Speed of sound 
a)
Generally the equation for Frequency is mathematically given by



b)
Generally the equation for Frequency is mathematically given by



The speed is constant since there is no opposite force facing the car
That’s my best guest hope it helps !! :)