Why is it importana to have variables and untis included in a data table?

1 answer:

3 0

Because if they aren't properly included, it means that you are saying that the numbers can be anything, all reals.

Not including units is the same thing, if you don't properly lable the data table, you could be talking about anything.

Not giving a proper unit/variable is almost like giving someone permission to assume what you're talking about

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Compared to ultraviolet light, an electromagnetic wave that has a higher frequency will also have ________.

Nikitich [7]

The answer is shorter wavelength and equal speed.

That is, compared to ultraviolet light, an electromagnetic wave that has a higher frequency will also have shorter wavelength and equal speed.

This can be seen by the reaction given below:

$h\times \upsilon =\frac{c}{\lambda }$

h= Planck's constant

c=speed of the light

$\upsilon$ =frquency

${\lambda }$ =wavelength

So, higher is the frequency, lesser is the volume while speed remains constant as c is speed of light.

6 0

3 years ago

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What is the direction of the polarity of the indicated bond in h3c−oh marked by δ+ and δ−?

Sedbober [7]

Answer:- The direction of the polarity of the indicated bond is from carbon to oxygen.

Explanations:- There are two types of covalent compounds, polar and non polar. If the bond is between two same atoms for example, H-H, Cl-Cl etc then the bond is non polar. If the bond is between two different atoms then the bond would be polar. The direction of the polarity is from loss electron negative atom to more electron negative atom.

Oxygen is more electron negative than carbon. So, being more electron negative, the bonding electrons are more towards oxygen and it cases partial negative charge on oxygen and partial positive charge on carbon. The direction of the polarity is from less electron negative carbon to more electron negative oxygen.

It is shown in the diagram below: