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4 years ago

If a mineral can be mined, what is it called?

Physics

2 answers:

NemiM [27]4 years ago

6 0

C. an ore. Like iron ore and gold oe. something deep in the Earth that can be mind and brought up.

labwork [276]4 years ago

6 0

Answer:

Option (C)

Explanation:

An ore is defined as a mineral deposit that is comprised of a sufficient amount of minerals, from which the economically rich metal, as well as other minerals, can be profitably extracted. These minerals are obtained from the environment by the various process of mining, such as the open cast and underground mining. For example, Zinc ore.

These ore deposits are commonly named after the location where they are found, and also named after the discoverer.

Thus, the correct answer is option (C).

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Globular clusters are important to understanding the Milky Way because Choose one: A. they reveal the size of the Milky Way and

kirill115 [55]

The correct answer is (A) they reveal the size of the Milky Way and Earth's location in it.

<h3>Why are globular clusters important?</h3>

Globular clusters are densely packed groups of old stars. They are roughly spherical in form and contain hundreds of thousands, if not millions, of stars. Studying them can help astronomers determine the age of the universe or locate the core of a galaxy.

According to Georgia State University there are around 150 identified globular clusters in the Milky Way galaxy. Most are thought to be at least 10 billion years old and contain some of the galaxy's oldest stars. The clusters most likely originated relatively early in the galaxy's evolution, before it flattened into a spiral disc.

Some globular clusters, like as Messier 13 (M13) in Hercules, are visible with the eye.

learn more about globular clusters refer:

brainly.com/question/14124832

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5 0

2 years ago

What are the advantages of having a roof with a lower thermal conductivity?

Paul [167]

Answer:

less energy is needed to heat the house

the roof is a better insulator

8 0

3 years ago

Read 2 more answers

What is 1 + 1 - 1 + 2 - 1 - 1<br>This is just to get answers

geniusboy [140]

Answer:

answer is 1

Explanation:

4 0

3 years ago

Read 2 more answers

An Olympic runner complete the 200 m sprint and 23 seconds. What is the runners average speed (round your answer to the nearest

kipiarov [429]

Should be 8.7 m/s. Just divide 200 by 23 and round from there.

3 0

3 years ago

If he leaves the ramp with a speed of 31.0 m/s and has a speed of 29.5 m/s at the top of his trajectory, determine his maximum h

raketka [301]

Answer:

The maximum height reached is 4.63 m.

Explanation:

Given:

Initial speed of the man (u) = 31.0 m/s

Speed at the top of trajectory ( $u_x$ ) = 29.5 m/s

Acceleration due to gravity (g) = 9.8 m/s²

When the man reaches the top of the trajectory, the vertical component of velocity becomes zero and hence only horizontal component of velocity acts on him.

Also, since there is no net force acting in the horizontal direction, the acceleration is zero in the horizontal direction from Newton's second law. Thus, the horizontal component of velocity always remains the same.

So, speed at the top of trajectory is nothing but the horizontal component of initial velocity.

Now, initial velocity can be rewritten in terms of its components as:

$u^2=u_x^2+u_y^2$

Where, $u_x\ and\ u_y$ are the initial horizontal and vertical velocities of the man.

Now, plug in the given values and simplify. This gives,

$(31.0)^2=(29.5)^2+u_y^2\\\\961=870.25+u_y^2\\\\u_y^2=961-870.25\\\\u_y^2=90.75\ m^2/s^2--------1$

Now, we know that, for a projectile motion, the maximum height is given as:

$H=\frac{u_y^2}{2g}$

Plug in the value from equation (1) and 9.8 for 'g' to solve for 'H'. This gives,

$H=\frac{90.75}{2\times 9.8}\\\\H=4.63\ m$

Therefore, the maximum height reached is 4.63 m.

3 0

4 years ago