Answer:
x=
Step-by-step explanation:
Q= illumination
I = intensity
Q= I/d^2
Q_total = ![\frac{I_1}{d_1^2}+\frac{I_2}{d_2^2}](https://tex.z-dn.net/?f=%5Cfrac%7BI_1%7D%7Bd_1%5E2%7D%2B%5Cfrac%7BI_2%7D%7Bd_2%5E2%7D)
= ![\frac{I}{x^2}+\frac{2I}{(16-x)^2}](https://tex.z-dn.net/?f=%5Cfrac%7BI%7D%7Bx%5E2%7D%2B%5Cfrac%7B2I%7D%7B%2816-x%29%5E2%7D)
now Q' = 0
⇒I![{-\frac{2}{x^3}}+\frac{4}{(16-x)^3}](https://tex.z-dn.net/?f=%7B-%5Cfrac%7B2%7D%7Bx%5E3%7D%7D%2B%5Cfrac%7B4%7D%7B%2816-x%29%5E3%7D)
x=![\frac{16}{\sqrt[3]{2}+1 }](https://tex.z-dn.net/?f=%5Cfrac%7B16%7D%7B%5Csqrt%5B3%5D%7B2%7D%2B1%20%7D)
[/tex]![\frac{1}{x^3} = \frac{2}{(16-x)^3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bx%5E3%7D%20%3D%20%5Cfrac%7B2%7D%7B%2816-x%29%5E3%7D)
x=
is the required point
Its b and a hope this helps
Answer:
OPTION B I THINK SOOOO
PLS MAKA ME BRAINIST PLS
Step-by-step explanation:
HOPE YOU HELP
Answer:
Step-by-step explanation:
The applicable formula is ...
s = rθ
where s is the arc length, r is the circle's radius, and θ is the central angle in radians.
Filling in the given values, we find ...
15 = 6θ
θ = 15/6 = 2.5 . . . radians
Pi (π) radians is 180°, so the angle in degrees is ...
2.5(180°/π) ≈ 143.24°
The volume of each container is: 25,133 ![cm^{3}](https://tex.z-dn.net/?f=cm%5E%7B3%7D)
Given:
height of container (h) = 80 cm
diameter of container (d) = 20 cm
radius = half of diameter =
of ![20 = 10 cm](https://tex.z-dn.net/?f=20%20%3D%2010%20cm)
Recall:
Volume of a cylinder = ![\pi r^{2} h](https://tex.z-dn.net/?f=%5Cpi%20r%5E%7B2%7D%20h)
<em>Substitute the values into the formula:</em>
![Volume = \pi \times 10^{2} \times 80 = 25132.74123](https://tex.z-dn.net/?f=Volume%20%3D%20%5Cpi%20%5Ctimes%2010%5E%7B2%7D%20%5Ctimes%2080%20%3D%2025132.74123)
Therefore, volume of each cylinder is approximately 25,133 ![cm^{3}](https://tex.z-dn.net/?f=cm%5E%7B3%7D)
Learn more about volume of cylinder here:
brainly.com/question/971817