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3 years ago

List 5-6 facts about earths interior.

Chemistry

1 answer:

Lelechka [254]3 years ago

5 0

Answer:

it has many layers

the inner core is solid

the core is iron

its very hot

the presusre increases as you move closer to the core

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4 years ago

Which sub-atomic particle is NOT found at the center of the atom?

Ostrovityanka [42]

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4 years ago

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2 years ago

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A piece of copper has a volume 130 L. What is the mass of the sample, in units of kilograms?

Reil [10]

Answer: The mass of the sample is 1264.800 kg.

Explanation:

Mass of the piece of copper = m

Volume of the copper price = $130 L=130,000 cm^3$

$1 L= 1,000 cm^3$

$Density=8.96 g/cm^3=\frac{Mass}{Volume}=\frac{Mass}{130,000 cm^3}$

$m=Density\times Volume=8.96 g/cm^3\times 130,000=1,264,800 g$

m = 1,264,800 g = 1,264.800 kg (1 kg = 1000 g)

The mass of the sample is 1264.800 kg.

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3 years ago

A population of rabbits triples every 2 months If there are 2 rabbits initially, how long will it take for the population to inc

Bezzdna [24]

Answer:

The rabbit population will reach 500 after 10 months.

Explanation:

According to the given data:

The initial number of rabbit's equals 2.

Number of rabbit's after 2 months =2x3= 6

Number of rabbit's after 4 months = 6x3=18

Number of rabbit's after 6 months = 18x3=54

Number of rabbit's after 8 months = 54x3=162

Thus we can see that the number of rabbit's form a Geometric series with common ratio =3 and initial term = 2

Now the general term of a geometric series with first term 'a' and common ratio 'r' is given by

$T_{n+1}=ar^{n}$

Thus we need to find when the term becomes 500 thus using the given data we have

$500=2\cdot 3^{n}\\\\3^{n}=250\\\\(n)log_3(3)=log_3(250)\\\\(n)=5.025\\\\$

Thus the fifth term (excluding the start term) will have a rabbit count of 500 now since each term has a time difference of 2 months thus sixth term will occur after $5\times 2=10months$

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3 years ago