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Mkey [24]
2 years ago
12

Microscopes are used to study the structures of rocks. Over time, microscopes have become more and more powerful.

Physics
1 answer:
natta225 [31]2 years ago
5 0

As a result this technological improvement, our structural information of rocks has improved greatly.

<h3>What is a petrographic microscope?</h3>

A petrographic microscope is a type of optical microscope that is used to identify rocks and minerals in very thin sections and also to investigate microscopic textures and features that are present in minerals and rocks.

This has improved greatly recent structural information about rocks.

Hence, microscopes used in the study of structures of rocks has overtime improved greatly our structural information about them

Learn more about structure of rocks here:

brainly.com/question/20151682

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A child sleds down a frictionless hill with vertical drop h. At the bottom is a level stretch where the coefficient of friction
andrew11 [14]

Answer:

Explanation:

Velocity at the bottom of height h

= √2gh

deceleration on rough horizontal surface

= μg , μ is coefficient of friction

= .27 x 9.8

= 2.646 m / s²

v² = u² - 2as

0 = 2gh - 2 x 2.646 x 19

h =  2 x 2.646 x 19  / 2 x 9.8

= 5.13 m  

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3 years ago
What are three things you already know about the game of baseball?
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Positions

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Explanation:

4 0
3 years ago
nolan ryan has the record for having the speediest fastball in baseball. he could pitch one at 148 i/sec. what is that speed in
Klio2033 [76]

The speed of the ball is 101miles/hr.

A mile is a unit of length that is exactly 1,609.344 metres long. Similarly, 5,280 feet or 1,760 yards make up one mile. The mile is an imperial and common US measurement of distance.

We just have to deal with unit conversions.

One mile is 5280 feet, or  1 ft = 0.000189

The speed of the ball in miles per hour is

\frac{148ft}{1sec} . \frac{1mile}{5280ft} .\frac{60s}{1min} .\frac{60min}{1hr}

So, the speed of the ball in miles per hour is 101miles/hr.

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5 0
1 year ago
Which statement about dwarf planets is true?
sineoko [7]
"Pluto was the first dwarf planet to be discovered" is the one statement among the following choices given in the question that is true <span>about dwarf planets. The correct option among all the options that are given in the question is the first option or option "a". Pluto was classified as a planet at first but in the year 1930 it was classified as a dwarf planet.</span>
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3 years ago
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What are power tools​
butalik [34]

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Tools that require electricty like drills

Explanation:

8 0
3 years ago
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