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3 years ago

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Physics

1 answer:

oee [108]3 years ago

8 0

Crust

Explanation:

The crust is the layer of the earth with the least dense materials. The crust is made up of silicate materials.

During the early stage in the formation of earth.
The earth differentiated minerals based on their densities.
Lighter minerals stayed afloat while the denser ones sank to the core of the earth.
The core is made up of the most dense metallic minerals.
As we go deep into the earth density increases.
Density of crust ranges from 2.-3.3g/cm³
The core is about 13.8g/cm³ dense.

Learn more:

Layers of the earth brainly.com/question/13059175

#learnwithBrainly

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rodikova [14]

Explanation:

Clear rendering reads;

"Make a table, like the one in the example, with the results obtained in the tests you carried out in previous activities. Then answer: What do these results indicate regarding your physical condition and how do they relate to your health? From your answers, consider the challenge of improving your physical condition by maintaining or improving your exercise routine or permanent practice of physical activity".

So the incomplete text above it seems you've been instructed to perform an experiment and then state your result/analysis.

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3 years ago

A circuit has two 4Ω resistors in series with each other. What is the total resistance?

Paha777 [63]

Answer: 8Ω

Explanation:

Since there are two resistors of 4Ω

connected in series, the total resistance (Rtotal) of the circuit is the sum of each resistance.

i.e Rtotal = R1 + R2

R1 = 4Ω

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Rtotal = ?

Rtotal = 4Ω + 4Ω

Rtotal = 8Ω

Thus, the total resistance of the circuit is 8Ω

3 0

3 years ago

Using a rope that will snap if the tension in it exceeds 356 N, you need to lower a bundle of old roofing material weighing 478

klasskru [66]

Answer:

a) 2.5 m/s²

b) 6.12 m/s

Explanation:

Tension of rope = T = 356N

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Mass of material = m = 478/9.81 = 48.72

Final velocity before the bundle hits the ground = v

Initial velocity = u = 0

Acceleration experienced by the material when being lowered = a

a) W-T = ma

⇒478-356 = 48.72×a

$\Rightarrow \frac{122}{48.72} = a$

⇒a = 2.5 m/s²

∴ Acceleration achieved by the material is 2.5 m/s²

b) v²-u² = 2as

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⇒v = 6.12 m/s

∴ Velocity of the material before hitting the ground is 6.12 m/s

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3 years ago

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Free_Kalibri [48]

Answer:

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Explanation:

you add red and blue together

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3 years ago

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Gemiola [76]

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I'm gonna go out on a limb here and take a wild guess:

I'm guessing that there's another question glued onto the end of this one, and it asks you to find either her displacement or her average velocity. I'm so sure of this that I'm gonna give you the solution for that too. If there's no more question, then you won't need this, and you can just discard it. I won't mind.

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3 years ago