Answer:
There is a dependency relationship between the refractive index of each substance and the radiation wavelength.
The refractive index in a given medium is inversely proportional to the wavelength of a color.
For example:
The rays of the red color have a wavelength greater than the rays of the blue color, therefore they have a lower refractive index and consequently a light scattering less than the blue.
Snell's law :
n₂/n₁ = v₁/v₂ = λ₁ /λ₂
*n: (refractive index)
v: (speed of light propagation)
λ: (wavelength)
Answer:
chromatography
Explanation:
Chromatography is one of the powerful technique that is used to separate the mixed components of liquid or the gas mixtures.
In this technique the separation of the mixture by passing the mixture in some solution or some suspension through the medium where the components are made to move at some different rates.
The basic idea in this experiment is that the mixture sample is in mobile phase and it is forced either by pumping or by gravity or by capillary action through the stationary phase to separate the mixture.
We can conclude that as the mass on the right increases, the distance of the mass towards the right decreases. Also when the two masses balance, the net torque is zero.
<h3>What is torque</h3>
The torque experienced by an object a given position is the product of the applied force and the perpendicular distance of the object.
When 5 kg mass is at 2 m on the left, another 5 kg at 2 m on the right will balance it.
![\tau _{net} = (2 \times 5 \times 9.8) - (2 \times 5 \times 9.8)\\\\\tau _{net} = 0](https://tex.z-dn.net/?f=%5Ctau%20_%7Bnet%7D%20%3D%20%282%20%5Ctimes%205%20%5Ctimes%209.8%29%20%20-%20%282%20%5Ctimes%205%20%5Ctimes%209.8%29%5C%5C%5C%5C%5Ctau%20_%7Bnet%7D%20%3D%200)
<h3>Position of 10 kg mass on the right</h3>
Apply principle of moment
![F_1r_1 = F_2r_2\\\\(m_1gr_1) = (m_2gr_2)\\\\r_2 = \frac{m_1gr_1}{m_2g} \\\\r_2 = \frac{m_1 r_1}{m_2} \\\\r _2 = \frac{5 \times 2}{10} \\\\r_2 = 1 \ m](https://tex.z-dn.net/?f=F_1r_1%20%3D%20F_2r_2%5C%5C%5C%5C%28m_1gr_1%29%20%3D%20%28m_2gr_2%29%5C%5C%5C%5Cr_2%20%3D%20%5Cfrac%7Bm_1gr_1%7D%7Bm_2g%7D%20%5C%5C%5C%5Cr_2%20%3D%20%5Cfrac%7Bm_1%20r_1%7D%7Bm_2%7D%20%5C%5C%5C%5Cr%20_2%20%3D%20%5Cfrac%7B5%20%5Ctimes%202%7D%7B10%7D%20%5C%5C%5C%5Cr_2%20%3D%201%20%5C%20m)
<h3>Net torque</h3>
![\tau_{et} = m_2gr_2 - m_1gr_1\\\\\tau_{et} = (10 \times 9.8 \times 1) - (5 \times 9.8 \times 2)\\\\\tau_{et} = 0](https://tex.z-dn.net/?f=%5Ctau_%7Bet%7D%20%3D%20m_2gr_2%20-%20m_1gr_1%5C%5C%5C%5C%5Ctau_%7Bet%7D%20%3D%20%2810%20%5Ctimes%209.8%20%5Ctimes%201%29%20-%20%285%20%5Ctimes%209.8%20%5Ctimes%202%29%5C%5C%5C%5C%5Ctau_%7Bet%7D%20%3D%200)
<h3>Position of the 20 kg mass</h3>
![r_2 = \frac{5 \times 2}{20} \\\\r_2 = 0.5 \ m](https://tex.z-dn.net/?f=r_2%20%3D%20%5Cfrac%7B5%20%5Ctimes%202%7D%7B20%7D%20%5C%5C%5C%5Cr_2%20%3D%200.5%20%5C%20m)
<h3>Net torque</h3>
![\tau_{et} = m_2gr_2 - m_1gr_1\\\\\tau_{et} = (20 \times 9.8 \times 0.5) - (5 \times 9.8 \times 2)\\\\\tau_{et} = 0](https://tex.z-dn.net/?f=%5Ctau_%7Bet%7D%20%3D%20m_2gr_2%20-%20m_1gr_1%5C%5C%5C%5C%5Ctau_%7Bet%7D%20%3D%20%2820%20%5Ctimes%209.8%20%5Ctimes%200.5%29%20-%20%285%20%5Ctimes%209.8%20%5Ctimes%202%29%5C%5C%5C%5C%5Ctau_%7Bet%7D%20%3D%200)
Thus, we can conclude that as the mass on the right increases, the distance of the mass towards the right decreases. Also when the two masses balance, the net torque is zero.
Learn more about principles of moment here: brainly.com/question/26117248
Question:
What quantity do units represent in a value? A. Size B. Direction C. Magnitude D. Dimension
Answer:
D. Dimension
Explanation:
A unit is simply the measurement given to a dimension. In other words, units represent dimensions. For example, consider a ruler that is 20m long.
i. The value is 20m.
ii. The magnitude of the measurement is 20
iii. The unit of the measurement is meters(m) and that essentially represents the dimension (length) of the ruler.
Every unit of density is
(a unit of mass) divided by (a unit of volume) .
The one most widely used is [ gram/cubic centimeter ] , but there's no reason that you MUST use this same unit every time you talk about density. You can use (any unit of mass) divided by (any unit of volume) that you want ... the best choices are always the ones that end up with the most convenient number.
Whatever units of mass and volume you decide to use, it's easy for anybody to convert it to [ gram/cubic centimeter ] if they want to.