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alexandr1967 [171]
3 years ago
14

After removing a TLC plate from the developing chamber, what is the first thing to do with the TLC plate?

Physics
1 answer:
postnew [5]3 years ago
4 0

Answer:

The solvent front line should be drawn.

Explanation:

TLC is thin layer chromatography, a techniques used for the separation of substances based on their mobility on their solvents. The silver or thin metal films are used for the absorption.

The TLC plate must be removed from the chamber. After its removal the solvent front line should be drawn to known the absorbance of the material. This technique is quiet useful for the distinction of molecules.

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The gravity on Earth has been calculated to be __.
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9.81 meters per second squared

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PLS ANSWERRR What are the main differences between the carbon flows 300 years ago and today?
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Answer:

reservoirs and flows of the carbon cycle and how human activities

explication :

Today, the carbon cycle is changing. Humans are moving more carbon into the atmosphere from other parts of the Earth system. More carbon is moving to the atmosphere when fossil fuels, like coal and oil, are burned. More carbon is moving to the atmosphere as humans get rid of forests by burning the trees.

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Label the different parts of a heart:
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4 0
4 years ago
A telephone pole has three cables pulling as shown from above, with F⃗ 1=(300.0iˆ+500.0jˆ) , F⃗ 2=−200.0iˆ , and F⃗ 3=−800.0jˆ .
Ray Of Light [21]

A) Net force in component form: F=100.0i-300.0j

B) Magnitude of the net force: 316.2, direction: -71.6^{\circ}

Explanation:

A)

The three forces given in this problem are:

F_1=300i+500j

F_2=-200i

F_3=-800 j

The three forces are given in component form, where the components with unit vector i is the component along the x-direction, while the components with unit vector j is the component along the y-direction.

In order to find the net force in component form, we just need to add the components of the three forces along each direction. Therefore:

- Along the x-direction:

F_x = F_{1x}+F_{2x}+F_{3x}=300+(-200)+0=100

- Along the y-direction:

F_y=F_{1y}+F_{2y}+F_{3y}=500+0+(-800)=-300

So, the net force in component form is

F=100.0i-300.0j

B)

The magnitude of a vector F is given by Pythagorean's theorem:

|F|=\sqrt{F_x^2+F_y^2}

where in this problem,

F_x=100 is the x-component

F_y=-300 is the y-component

Substituting,

|F|=\sqrt{(100)^2+(-300)^2}=316.2

The direction instead is given by

\theta=tan^{-1}(\frac{F_y}{F_x})=tan^{-1}(\frac{-300}{100})=-71.6^{\circ}

where the negative sign means the direction is below the positive x-axis.

Learn more about vector addition:

brainly.com/question/4945130

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Which elements are the main components of the Sun?
dybincka [34]
The answer is hydrogen and helium

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4 years ago
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