This is a lens<span> in which both surfaces are curved so that a beam of light passing through it is brought to a point or focus.hope this helps</span>
Answer:
Explanation:
For this case we know that the speed of the sound is given by:
And we have the following info provided:
represent the car leading
represent the car behind with the source
is the frequency for the observer
And we can find the frequency of the source with the following formula:
And replacing we got:
So then the frequency for the source would be the same since the both objects are travelling at the same speed.
He turned his observations into laws, to establish constants and explanations of future scientists.
Explanation:
Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt.