Im pretty sure the answer would be A
When a wave and/or the observer are moving, the frequency changes according to the Doppler Effect.
When the source is at rest and the observer moves away from it, the wave looks slower and its velocity will be:
v' = vsound - vobserver
In this case,
f₁ = v'/λ = (vsound - vobserver) / λ = f₀ · (<span>vsound - vobserver) / vsound
= f</span>₀ · (1 - vobserver/vsound)
On the contrary, when the source is moving away from an observer at rest, the wave appears with a different wavelengh:
λ' = (vsound + vsource) / f₀
In this case,
f₂ = v/<span>λ' = vsound / ((vsound + vsource) / f₀)
= </span>f₀ ·
Now, let's put together these two cases:
f' = v' / <span>λ' =
= </span>
<span>
= f</span>₀ ·
= f<span>₀ · </span>
To find out scientific notation, you want to make sure that number is less than 10. So do 5.000000, you don't rally need the zeros but I just want to make my point. So use 10^x meaning ten the whatever power adds zeros like 5.000000x10^6 meaning it is increasing it by six zeros moving it out of the decimals and letting become 5,000,000.
Answer:
Oxygen
Explanation:
auction oxygen is made out of carbon water and other substances. so so is a solution
Answer:
past and past participle of catch.