Answer:
A: the intensity
Explanation:
the closer the sound, the more intense it is. Think about the ambulance illustration in your text book (assuming you are using a physics textbook) : )
Answer:
t = 300.3 seconds
Explanation:
Given that,
The mass of a freight train,
Force applied on the tracks,
Initial speed, u = 0
Final speed, v = 80 km/h = 22.3 m/s
We need to find the time taken by it to increase the speed of the train from rest.
The force acting on it is given by :
F = ma
or
So, the required time is 300.3 seconds.
3750 seconds to travel that far
Because it can pollute the air and cause wild life to eat stuff that has been contimanted by the air