Answer:
The speed of the ambulance is 4.66 m/s.
Explanation:
Given that,
The siren emitting a whine at 1570 Hz
The cyclist pedaling a bike at 2.45 m/s
The cyclist hears a frequency of 1560 Hz
We know that,
Speed of sound wave
We calculate the speed of the ambulance
Using Doppler effect,
Where,
= frequency of ambulance siren
= cyclist hears the frequency
=speed of source
= speed of observer
Put the value in to the formula
Hence, The speed of the ambulance is 4.66 m/s.
Explanation:
Below is an attachment containing the solution.
D. The answer is D because any other scenario is possible. For example, in A, John could very easily put the planets in order. In problem B, he could draw some planets bigger than others. On C, he could color the planets on a different color. He can not hovever, move the planets