3 years ago

How is weathering and erosion related?

1 answer:

4 0

Erosion breaks rocks down further and then moves them. Forces like wind and water move the rock pieces. They mix with matter like sand to become sediment. Weathering and erosion help shape Earth's surface.

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Which best describes thermal energy?

Sav [38]

Answer:

It is the sum of internal energies of two or more substances

Explanation:

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4 years ago

A girl has a weight of 450 N and her feet have a total area of 300Cm2

snow_tiger [21]

Answer:

15000N/m²

Explanation:

Given parameters:

Force exerted by the girl = 450N

Area = 300cm²

Unknown:

Pressure exerted by her feet =?

Solution:

Pressure is the force per unit area on a body;

Pressure = $\frac{force }{area}$

We need to convert the given area to m²;

10000cm² = 1m²

300cm² = $\frac{300}{10000}$ = 0.03m²

Pressure = $\frac{450}{0.03}$ = 15000N/m²

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3 years ago

Which statement gives a reason why scientist think that the universe began with an explosion

yaroslaw [1]

I believe the answer is

At the moment it is the best way of explaining our scientific knowledge.

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3 years ago

What is safer to drink 113 ml of HCl or 244 ml of NaOH

skad [1K]

Answer:

bleach

Explanation:

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3 years ago

What is the chemical equation of BaO+O2→BaO2 ?

jeka57 [31]

<span>2 BAO2 = 2 BAO + O<span>2 is the balanced equation</span></span>

6 0

3 years ago