Which of the following was NOT thought to be a body within the universe during the 17th century?

How many square inches will it take to cover the outside of the triangular pyramid below? 12 in 10.4 in and 12 in

egoroff_w [7]

Answer:

249.6 sq. in.

Explanation:

In this question, we need to find the surface area of the triangular pyramid in order to calculate how many square inches are needed to cover it. The formula for the surface area of a triangular pyramid is the following

$\frac{1}{2}$ (a × b) + $\frac{3}{2}$ (b × s)

We can say that the values provided represent the following variables.

a = 12in

b = 10.4in

s = 12in

$\frac{1}{2}$ (12 × 10.4) + $\frac{3}{2}$ (10.4 × 12)

$\frac{1}{2}$ (124.8) + $\frac{3}{2}$ (124.8)

62.4 + 187.2

249.6 sq. in.

Finally, we can say that it would take 249.6 sq. in. in order to cover the triangular pyramid.

3 0

2 years ago

Tectonic activity happens when changes to the Earth's crust are caused by __________. A. changes to the Earth's gravity B. chang

Marina CMI [18]

Answer:

C. the movement of the Earth's plates

Explanation:

The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth's mantle and fit snugly against one another. The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other.This movement is called plate motion, or tectonic shift. (National ocean service)

8 0

3 years ago

What environmental impacts are caused by both surface mining and underground mining? Select the two correct answers.

UkoKoshka [18]

Answer:

B. local water contamination

D. destruction of ecosystems

Explanation:

The mining, be it a surface one or underground one, has several negative impacts on the surrounding area. Two common negative impacts of both types of mining are contamination of the local waters, as well as the destruction of ecosystems.

The waters get heavily polluted with toxic chemicals pretty much always ad everywhere where there is mining. The main reason for this is that the nus-products from the mining are released into the waters. This causes high level pollution of the waters, thus making it not good for anything, and the aquatic life in the waters dies out rapidly.

The fact that the waters are heavily polluted means that everything that comes in touch with them becomes heavily polluted as well. Also, apart from releasing chemicals in the waters, the mining requires space, so the area is cleared out, and after that lot of toxic material is disposed on it. The majority of the plants can sustain that, so they die out, and since they are the basis of the ecosystems, the animals die out as well.

8 0

3 years ago

Lines of latitude run parallel to 0 degrees latitude called the

krok68 [10]

Equator is the answer to the question

6 0

3 years ago

A satellite orbiting earth has a tangential velocity of 5000 m/s. earth’s mass is kg and its radius is m. which is the distance

inessss [21]

The distance of the satellite form the earth is:
9,608,000 m (Option C) in Standard form, this is written as 9.6 x 10 $^{6}$ .

<h3>What is an Orbiting Satellite?</h3>

An Orbiting Satellite is a satellite that goes around the earth in an elliptical path known as an orbit.

To calculate the distance of the satellite from the earth we must equalize the force of Gravity to Centripetal Force given that these are the two forces that are at play here.

Step 1:

Equation that equalizes Gravity to Centripetality is:

G = mM/r² = m(v²/r)

Note that G = 6.67 x 10 $^{-11}$ (This is a gravitational constant.)

m is the Mass of the Satellite

M is Mass of the Earth

r is the distance of the satellite from the center of the earth

v is the satellites tangential velocity

Step 2 - Rearrange the formula and substitute the numbers above to get r

r = G (m/v²) = (6.67 x 10 $^{-11}$ ) (6 x10 $^{24}$ /5000²) =

= 1.6 x 10 $^{7}$ m

Recall that form our postulation above, this is the satellites distance form the center of the earth.

To get it's distance form the earth's surface, we must know remove the value of the radius of the earth from the calculation. Where radius of the earth is given a r'

Hence,

r' = r - R = 1.6 x 10 $^{7}$ m - 6.4 x 10 $^{6}$ m

= 9.6 x $10^{6}$ m or 9,608,000 m

Learn more about orbiting satellites at:

brainly.com/question/18496962

3 0

2 years ago