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2 years ago

_______________ involves removing the top layer of earth, mining the coal, and then replacing the earth back on the surface

1 answer:

5 0

Surface mining is the method of removing the overburden parts of the earth which are the earth and rocks. It also involves removal and loading out of the coal, and then placing back the collected earth back into a surface once again. It's also a method that uses equipment or explosives.

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During a physical science lab investigating chemical reactions, several students placed a 30g antacid tablet in a 30g zip-lock b

ICE Princess25 [194]

30 Grams would be your answer (I took the test and got it right)

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2 years ago

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Which statement best summarizes Gregor Mendel’s contribution to science?

Rama09 [41]

Hey there!

<span>Which statement best summarizes Gregor Mendel’s contribution to science?

Mendel is considered the "father of genetics". He did NOT increse the number of peas </span>
<span>produced by a single plant using cross-breeding techniques, discover grean peas and yellow peas, or invent the green pea by cross-breeding thousands of pea plants.

This means your answer is option D.

Hope this helps
Have a great day (:
</span>

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3 years ago

Read 2 more answers

A car accellerates from 12.0 m/s to 18 m/s in 4 seconds. What distance did it travel in this time?

Alona [7]

Answer:

Just go broom broom on ya teacher

Explanation:

cause why not

6 0

2 years ago

A neutral atom as the same number of protons and electrons.

ZanzabumX [31]

That is correct. Or so I believe. Either more or less than the other on the amount of protons and electrons, you can get either an unstable or a stable atom of an element.

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2 years ago

A ball is thrown at a 60.0° angle above the horizontal across level ground. It is thrown from a height of 2.00 m above the groun

klio [65]

Answer:

Option E is correct.

Time the ball remains in the air before striking the ground is closest to 3.64 s

Explanation:

yբ = yᵢ + uᵧt + gt²/2

yբ = 0

yᵢ = 2 m

uᵧ = u sinθ = 20 sin 60 = 17.32 m/s

g = -9.8 m/s², t = ?

0 = 2 + 17.32t - 4.9t²

4.9t² - 17.32t - 2 = 0

Solving the quadratic equation,

t = 3.647 s or t = -0.1112 s

time is a positive variable, hence, t = 3.647 s. Option E.

7 0

2 years ago