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3 years ago

What property is a characteristic of a pure substance that can be observed with out changing the substance into something else

1 answer:

4 0

physical property is a characteristics of a pure substance that can be observed without changing the substance into someone else.

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QUESTION 36

mel-nik [20]

Answer:

Explanation:

m = ρV = 1.03( 1000 kg/m³)(π(2² m²)(3.0 m)) = 12360π kg

m ≈ 38,830 kg

5 0

3 years ago

Unpolarized light passes through a combination of two ideal polarizers. The transmission axes of the first polarizer and the sec

Yuliya22 [10]

Answer:

62.5 %

Explanation:

Let the initial intensity of unpolarized light is Io.

After first polariser the intensity of light becomes I'.

So, $I' = \frac{I_{0}}{2}$

Now it passes through another polariser. The angle between the first polariser and the second polariser is given by Ф. The intensity is I''.

According to the law of Malus

$I'' = I' Cos^{2}\phi$

Here, Ф = 30 degree

$I'' = \frac{I_{0}}{2} Cos^{2}30=0.375I_{0}$

The percentage change in the intensity is given by

$\frac{I_{0}-I''}{I_{0}}\times 100=\frac{I_{0}-0.375I_{0}}{I_{0}}\times100$

= 62.5 %

7 0

3 years ago

Which division of time on the geologic time scale is the shortest?

Scrat [10]

Explanation:

In geology, there are 5 divisions of time on the time scale. They are:

eons
eras
periods
epochs
ages

Eons are the largest time period, while ages are the shortest time period. The rest of the above listed are in between the two.

8 0

2 years ago

Two massive particles with identical charge are launched into the uniform field between two plates from the same launch point wi

Svetach [21]

<h2>Answernswe:</h2>

<h2>The interaction between charged object is a non-contact force that acts over some distance of separation.Charge,charge and distance.Every electrical interaction involves a force that highlights the importance of these three variables</h2>

6 0

3 years ago

A scientific model is based on assumptions that limit where and how the model can be applied. True False

belka [17]

Answer:

i think it is true

Explanation:

6 0

3 years ago