Answer:
Explanation:
Intensity of light is inversely proportional to distance from source
I ∝ 1 /r² where I is intensity and r is distance from source . If I₁ and I₂ be intensity at distance r₁ and r₂ .
I₁ /I₂ = r₂² /r₁²
If r₂ = 4r₁ ( given )
I₁ / I₂ = (4r₁ )² / r₁²
= 16 r₁² / r₁²
I₁ / I₂ = 16
I₂ = I₁ / 16
So intensity will become 16 times less bright .
"16 times " is the answer .
I personally don't (I can't speak for others tho) but I say right twix is better for the memes
Answer: The original temperature was
Explanation:
Let's put the information in mathematical form:
If we consider the helium as an ideal gas, we can use the Ideal Gas Law:
were <em>R</em> is the gas constant. And <em>n</em> is the number of moles (which we don't know yet)
From this, taking , we have:
⇒
Now:
⇒
According to the Bernoulli's equation,the pressure difference between the wide and narrow ends of the pipe is given by
Here, is the velocity of water through wide ends of cylindrical pipe and is the velocity of water through narrow ends of cylindrical pipe.
Given,
Now from equation continuity,
.
Here, and are cross- sectional areas of wide and narrow ends of cylindrical pipe.
As pipe is circular, so
.
At the second point, the diameter is halved, which means the radius is also halved. Therefore,
Substituting these values with the density of water is in pressure difference formula we get.
The skittles because they are small so you can fit more in