A person that is standing behind a moving siren will interpret the frequency to be lower compared to the person that would be standing in front of it. This is because the sound is now moving away from the person behind the siren and at this point the sound is juts lingering but, still very low.
Answer:
Divide the change in velocity by the time interval
Explanation:
Acceleration is defined as the rate of change of velocity.
mathematically it is the change in velocity divided by the time taken for that change.
i.e Divide the change in velocity by the time interval.
Answer:
The value is
Explanation:
From the question we are told that
The radius is
The coefficient of static friction is
Generally the maximum safe driving speed is mathematically represented as
=>
=>
The answer is B. A frame of reference that is accelerating.
Answer: a dark (absorption) line
Explanation:
This is as a result of absorption of electromagnetic a specific wavelength. The pattern followed by such lines is characteristic of specific atoms in the path of radiation.