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3 years ago

Is the earths core solid or liquid

Chemistry

2 answers:

melisa1 [442]3 years ago

5 0

Answer:

Liquid

Explanation:

Earth’s core is liquid because it’s hot enough to melt iron, but only in places where the pressure is low enough

PIT_PIT [208]3 years ago

3 0

earth's core is solid

according to the recearch

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If E=mc^2,solve for both m and c. Also, if m=80 and c=0.40 what is the value of E?

Pie

Answer:

$m = \frac{E}{c^2}$

$c = \sqrt{\frac{E}{m} }$

$E = 12.8 J$

Explanation:

Part 1: Solving for m

We are given that:

E = mc²

To solve for m, we will need to isolate the m on one side of the equation

This means that we will simply divide both sides by c²

$m = \frac{E}{c^2}$

Part 2: Solving for c

We are given that:

E = mc²

To solve for c, we will need to isolate the m on one side of the equation

This means that first we will divide both sides by m and then take square root for both sides to get the value of c

$c^2 = \frac{E}{m}\\ \\ c=\sqrt{\frac{E}{m}}$

Part 3: Solving for E

We are given that:

m = 80 and c = 0.4

To get the value of E, we will simply substitute in the given equation:

E = mc²

E = (80) × (0.4)²

E = 12.8 J

Hope this helps :)

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4 years ago

The mixture you separated was a mixture of iron filings, sand, and salt. Based on your understanding of matter, is this mixture

Anarel [89]

Its a heterogeneous mixture

The parts are not uniformly mixed

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3 years ago

To 100.0 g water at 25.00 ºc in a well-insulated container is added a block of aluminum initially at 100.0 ºc. the temperature o

11111nata11111 [884]

When the amount of heat gained = the amount of heat loss

so, M*C*ΔTloses = M*C* ΔT gained

when here the water is gained heat as the Ti = 25°C and Tf= 28°C so it gains more heat.

∴( M * C * ΔT )W = (M*C*ΔT) Al

when Mw is the mass of water = 100 g

and C the specific heat capacity of water = 4.18

and ΔT the change in temperature for water= 28-25 = 3 ° C

and ΔT the change in temperature for Al = 100-28= 72°C

and M Al is the mass of Al block

C is the specific heat capacity of the block = 0.9

so by substitution:

100 g * 4.18*3 = M Al * 0.9*72

∴ the mass of Al block is = 100 g *4.18 / 0.9*72

= 19.35 g

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Explain why there would be many more plants in an ecosystem than ape-x consumers. I NEED THIS PLS

dsp73

Answer:

Explanation:

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3 years ago

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Write the name for the IONIC compound that contains two aluminum atoms and three sulfur atoms. (Need help ASAP)

Arada [10]

Ionic compound
Al +3 charge, Aluminum
S -2 charge, Sulfur

Al2S3

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3 years ago