Answer:
i dont understand, can you put it in word form please.
Explanation:
Answer: Δβ (dB) = -13.1dB
Explanation:
The intensity of sound is inversely proportional to the square of the distance between them.
I ∝ 1/r²
I₁/I₂= r₂²/r₁² .....1
When the listener increases his distance from the source by a factor of 4.49.
Then,
r₂/r₁= 4.49
From equation 1
I₁/I₂ = (4.49)²
I₁/I₂ = 20.16
I₂/I₁ = 1/20.16
The change in sound intensity in dB can be given as
Δβ (dB) = 10 log(I₂/l₁) = 10log(1/20.6) = -13.1dB
That would be false
Hope this helps :)
Answer:
Explanation:
Given that,
The wavelength of light, 
We need to find the frequency of the light. We know that,
So, the required frequency of light is equal to 
.
The answer is D, it increases the susceptibility to infections.
