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3 years ago

What is the streak of a mineral used for

Physics

2 answers:

Savatey [412]3 years ago

6 0

Answer:

Streak of a mineral is used to identify a specific mineral.

Explanation:

Streak of a mineral is a color of a particular mineral in its powder form. Geologist carry out "Streak Test" to identify the mineral type by its color. Here's how:

For example: we have a mineral like Hematite which consists several different specimens in it and each specimen possess different colors like black, red, brown or silver. But all of these specimens gives a combined streak of reddish color which is a characteristic of Hematite Mineral.

ad-work [718]3 years ago

5 0

The streak of a mineral is used for identifying what the mineral may be.

Hope this helps :)

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2 years ago

Coulomb's Law: Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrost

Ahat [919]

Answer:

The magnitude of electrostatic force on each charge is quarter of the magnitude of initial electrostatic force. ( ¹/₄ F)

Explanation:

The electrostatic force between two charges is given by Coulomb's law;

$F = \frac{kQ_1Q_2}{r^2}$

where;

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k is Coulomb's constant

Since the charges are identical;

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Q₂ = Q

the electrostatic force experienced by each charge is given by;

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When each of the spheres has lost half of its initial charge;

Q₁ = Q/2

Q₂ = Q/2

$F_2 = \frac{k(Q/2)(Q/2)}{r^2}\\\\ F_2 = \frac{k(Q)(Q)}{4r^2}\\\\F_2 = \frac{1}{4} (\frac{kQ^2}{r^2} )\\\\F_2 = \frac{1}{4} (F)$

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3 years ago

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3 years ago

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A 12. 0 cm object is 9. 0 cm from a convex mirror that has a focal length of -4. 5 cm. What is the distance of the image from th

expeople1 [14]

A mirror equation is an equation that relates object distance and image distance to focal length. The distance of the image from the mirror will be -3 cm.

<h3>What is a mirror equation?</h3>

A mirror equation is an equation that relates object distance and image distance to focal length. It's sometimes referred to as a mirror formula.

$\rm \frac{1}{v} +\frac{1}{u} =\frac{1}{f} \\\\$

The given data in the problem is;

f is the focal length = -4. 5 cm

u is the object distance=12. 0 cm

v is the image distance =?

$\rm \frac{1}{v} +\frac{1}{12.} =\frac{1}{-4.5} \\\\ \rm \frac{1}{v}= \frac{1}{-3} \\\\ \rm v= -3cm$

Hence the distance of the image from the mirror will be -3 cm.

To learn more about the mirror equation refer to the link;

https://brainly.in/question/31545592

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2 years ago